Leonard Susskind is a professor of theoretical physics at Stanford University and he’s regarded as one of the fathers of string theory.He’s written several books including: The Black Hole War, The Cosmic Landscape, and the Theoretical Minimum series.He also has over 100 lectures on YouTube.The YC podcast is hosted by Craig Cannon.***Topics0:26 - Being perceived as an outsider physicist   4:26 - The perils of becoming too mainstream6:11 - Where his ideas come from7:26 - Claudio asks - Do you think the graviton can be experimentally found?10:11 - The origins of String Theory15:41 - Why should there be a grand unified theory?16:56 - Quantum mechanics and gravity  20:16 - Large unanswered questions in physics27:56 - Holographic principle38:26 - Simulation hypothesis40:41 - Richard Feynman on philosophy42:26 - Feynman and the bomb46:26 - Improving the world by discovering what the world is49:26 - ER and EPR - Black holes and entanglement56:26 - Noah Hammer asks - Could quantum teleportation be used in the future as a means of intergalactic communication?58:26 - rokkodigi asks - How do you think quantum theory will shape technology in the future?1:01:56 - Why teach physics for the public?

Michael Seibel is a partner and the CEO of YC. He cofounded Justin.tv, which was in the winter 2007 batch and Socialcam, which was in the winter 2012 batch.In this episode Michael comments on five of his essays. The essays are: Why Should I Start a Startup?, One Order of Operations for Starting a Startup, The Real Product Market Fit, Users You Don’t Want, and Why Does Your Company Deserve More Money?Michael’s on Twitter @mwseibel.The YC podcast is hosted by Craig Cannon.***Topics0:00 - Intro0:42 - Why Should I Start a Startup?2:00 - Three types of people: people highly motivated when working for themselves, people that could succeed starting a startup or within a big company, and people that could succeed within a big company.6:00 - How do you decide what type of person you are?7:30 - Identify bias in advice givers10:30 - Peer advice becomes less valuable during college14:40 - One Order of Operations for Starting a Startup15:40 - People aren’t taught how to find ideas17:20 - Find a particular problem that you’re passionate about20:55 - Find some friends and brainstorm a solution23:20 - Build an MVP25:55 - Two failed orders of operations for starting a startup29:57 - The Real Product Market Fit 30:57 - Why do many founders think they have product market fit when they don’t?35:42 - Building a successful company is not a single variable problem37:27 - Socialcam didn’t hit product market fit38:37 - Justin.tv had $1M in profit before reaching product market fit42:27 - Some companies take a long time42:55 - Users You Don’t Want44:25 - The spectrum of how users are using your product45:55 - Users that take a lot of customer support time48:50 - Don’t let the hijack users control the product roadmap49:31 - Why Does Your Company Deserve More Money?50:31 - A team, a product, and an office are all just a means to an end51:31 - If you don’t really deserve money, what is an alternate path to create leverage?53:16 - Breaking even at Justin.tv was a moment of infinite clarity55:31 - Series A program and leverage

Andrew Kortina is the cofounder of Venmo and Fin. Fin is a high quality, on-demand, personal assistant and executive assistant service. You can get a $100 credit to try Fin at https://fin.com/ycAndrew blogs at https://kortina.nyc/The YC podcast is hosted by Craig Cannon.***Topics 00:32 - Human dignity and work8:07 - Creating jobs10:07 - From The Beautiful Struggle // The Beautiful Game - You might argue that we’re already in a sort of failure mode, where our ability to assign dignity to arbitrary work and motivate people to work bullshit jobs is more efficient than our ability to allocate labor towards industry that would have greater social benefit, like education, healthcare, food, etc. If we’re already in this failure mode, it’s kind of the worst of all worlds, because not only are we assigning meaning to work that doesn’t need to be done, but, also, we could be redeploying that labor towards efforts that are actually important today. 18:32 - Travel21:02 - Why do we want to do anything?22:07 - Life after Fin25:17 - From The Emperor Has No Clothes, There is No Santa Claus, and Nothing is Rocket Science - I want to preface this talk by warning you that it’s quite possible you’ll interpret much of this talk as cynicism. It is not my intention to be cynical. My goal is to treat you with respect by speaking to you honestly, without any grand illusions.None of the companies trying to convince you to work for them will mention technological determinism. They will confirm what your parents and teachers told you, that your work and contribution will be totally unique and significant.32:02 - From The Emperor Has No Clothes, There is No Santa Claus, and Nothing is Rocket Science - I recognize that the meditative aspect of craft is an excellent way to cope with meaninglessness38:32 - Technological determinism43:02 - Andrew's company Fin48:17 - Ryan Hoover asks - When (if ever) will Fin task completion be 100% AI-driven?49:32 - Differences between running Fin and Venmo56:47 - Venmo's Lucas ads58:32 - Spencer Clark asks - How did you and your co-founders decide to sell Venmo?1:02:02 - Charlie Kaufman on Screenwriting - What I’m trying to express – what I’d like to express – is the notion that, by being honest, thoughtful and aware of the existence of other living beings, a change can begin to happen in how we think of ourselves and the world, and ourselves in the world.1:08:30 - Get $100 credit to Fin at https://fin.com/yc

Brian Donohue is President of Instapaper and a Product Engineering Manager at Pinterest.You can find him on Twitter @bthdonohue.The YC podcast is hosted by Craig Cannon.***Topics00:19 - The history of Instapaper8:19 - Free competitors enter the market10:19 - How Brian joined Instapaper14:34 - Transitioning from paid to freemium19:19 - Pinterest's acquisition of Instapaper26:34 - Moving to California29:04 - Working on Instapaper within Pinterest32:19 - Spinning Instapaper out of Pinterest42:34 - Jareau Wadé asks - What types of product integrations could Pinterest have done with Instapaper?50:04 - Ryan Hoover asks - I’m curious how he and the team balance simplicity with new feature development/product expansion.54:19 - Raymond Durk asks - I love the rapid reading mode but would also love a voice enabled mode where the Google Assistant or Siri reads it. Speaking of I'd use it on my Google Home to listen to news if that was a skill.57:39 - Brian Kim asks - Any growth hacks that worked well?1:00:04 - Gustaf Alströmer asks - How does it make time for focused time to catch up on everything he saves? What are his best productivity hacks related to this?1:03:44 - Backpacking

Sam Altman expands on ideas that have come up in several of his essays. Specifically: choosing projects, creating value, and finding purpose.Sam’s the president of YC Group and co-chairman of OpenAI. You can find him on Twitter @sama.The YC podcast is hosted by Craig Cannon.***Topics1:25 - From The Days Are Long But The Decades Are Short - Minimize your own cognitive load from distracting things that don’t really matter. It’s hard to overstate how important this is, and how bad most people are at it.3:50 - Stepping back and evaluating your work5:30 - Creating metrics for your projects6:30 - Taking a year off 9:30 - Figuring out when to commit11:30 - Poker12:30 - From Productivity - Sleep seems to be the most important physical factor in productivity for me. Exercise is probably the second most important physical factor. The third area is nutrition. 15:00 - From You and Your Research by Richard Hamming - "If what you are doing is not important, and if you don't think it is going to lead to something important, why are you at Bell Labs working on it?"16:30 - From The Days Are Long But The Decades Are Short - Things in life are rarely as risky as they seem. Most people are too risk-averse, and so most advice is biased too much towards conservative paths.17:30 - Perspective shifts20:15 - From Productivity - My system has three key pillars: “Make sure to get the important shit done”, “Don’t waste time on stupid shit”, and “make a lot of lists”.22:30 - What Happened to Innovation24:50 - From You and Your Research by Richard Hamming - He who works with the door open gets all kinds of interruptions, but he also occasionally gets clues as to what the world is and what might be important. 26:50 - The deferred life plan doesn’t work31:50 - From The Merge - Our self-worth is so based on our intelligence that we believe it must be singular and not slightly higher than all the other animals on a continuum. Perhaps the AI will feel the same way and note that differences between us and bonobos are barely worth discussing. 34:10 - Weight training35:30 - The Way to Love by Anthony de Mello

Laura Deming is a partner at The Longevity Fund. They invest in companies that will allow us to live longer and healthier lives.You can learn more about them at Longevity.vc.Laura’s on Twitter @LauraDeming.The YC podcast is hosted by Craig Cannon.***Topics00:22 - Why focus on longevity now?2:12 - How did Laura get started in longevity?3:22 - Why raise a fund?5:52 - What does Laura do personally for longevity?9:07 - Worm and mouse studies10:44 - Craig's personal habits12:37 - Human studies15:22 - Mica asks - Do you think immortality is going to be achieved by: 1. Curing all disease and stop aging so we could live with our own bodies forever 2. OR is going to be something like porting our brain, "mind" to a computer/robot?17:37 - Most likely strategies to increase lifespan19:47 - Ryan Hoover asks - Ask about the ethics of longevity. Jack J. Fernandes asks - Do people actually want to live longer?21:44 - Mica asks - How would immortality change society? Wouldn't we become more complacent? Since we have "forever" to do things wouldn't that diminish our rate of innovation? And since less new individuals are being created we would have access to less new ideas. We would just stop creating new Newtons, Einsteins, Mozarts…24:52 - Cognitive enhancement25:52 - Daily habits34:12 - Tech environment changes in the past 5-10 years39:22 - What percentage of people in labs want to start companies?41:37 - Pioneer43:57 - Confidence45:52 - Podcasting49:12 - Choosing media to consume52:17 - Sam Betesh asks - The last thing that led to a step function change in average life span was germ theory. What new areas of research might provide the next step function change?55:07 - Extending fertility windows57:22 - Jason Choi asks - What % of longevity is attributable to lifestyle choices vs genetics and the progress of technology in influencing both.58:37 - Fatih asks - is blood transfusion a thing or just a hoax1:00:42 - Rapamycin1:02:27 - Testosterone1:04:37 - Chris asks - Aubrey De Grey, IIRC, mentioned a number of times that we might, in the future, replace organs and tissues with new organic ones before they fail. Is this actually a reasonable idea, or is it more likely that we'll replace them with synthetic ones, if we replace them at all?1:06:07 - Mica asks - Laura did a "cookie diet" for one month. Why did you do it? How did you feel? Doesn't it go against all the research on longevity? ;-)1:08:07 - Is Laura actually not doing anything strange in her diet?

Shola Akinlade is CEO and cofounder of Paystack. Paystack helps businesses in Africa get paid online and offline. They’re based in Lagos, Nigeria and were part of the Winter 2016 batch.Shola’s on Twitter @shollsman.The YC podcast is hosted by Craig Cannon.***Topics00:26 - What is Paystack?01:06 - Shola's background and previous company4:26 - Paystack's YC application6:01 - Meeting his cofounder7:26 - Interviewing at YC10:21 - Joining YC as a Nigerian company10:56 - Differences between startups in Nigeria and the US13:26 - Nigeria's payments market15:56 - Paystack's growth19:26 - Expanding to other countries and hiring25:26 - The best part of doing YC29:26 - Crypto developments in Africa30:21 - Creative Joe asks - How difficult is it to get into YC?30:56 - Educating US investors32:06 - Paul Israel asks - What gaps do you think still exist in the Nigerian fintech space?33:01 - Nelson asks - Are there any conventional startup advice that did not work for Paystack as their target market is Africa?35:21 - Nelson asks - What are some important lessons he learnt while building Paystack?37:46 - Nelson asks - What are some applications he would love to see been built on top of Paystack?39:56 - Building for Africa42:16 - Nestor Ezeagu asks - Do you think something like GoFundMe could work in Nigeria?42:46 - Car Joyy asks - Can I receive payments as an MVP ecommerce site before registering as a company?44:06 - Achyut Shrestha asks - What’s your tech stack?44:41 - Jordan Jackson asks - What are the biggest cultural differences that you account for in UX and product design?48:41 - Shola's outlook50:36 - What he misses about life before Paystack52:51 - Paystack in five years54:16 - Music recommendations

David Hua is CEO and cofounder of Meadow. Meadow makes retail and delivery software for dispensaries. They were part of the Winter 2015 batch. You can check them out at GetMeadow.com. David’s on Twitter @Hua.Vincent Ning is CEO and cofounder of Nabis. Nabis is a cannabis services group. They offer distribution, logistics, sales, and marketing. You can check them out at GetNabis.com. Vincent's on Twitter @vcning.The YC podcast is hosted by Craig Cannon.***Topics00:38 - What David brought with him5:48 - Microdosing6:48 - What are people buying?10:38 - Customer demographics12:00 - CBD14:58 - Changing vocabulary around cannabis17:13 - What is Meadow?17:38 - What is Nabis?17:53 - Why did they choose to not do cannabis product manufacturing?22:38 - Fundraising as a cannabis company26:08 - Why is there not one dominant cannabis company?29:53 - Legalization across Canada31:38 - Banking as a cannabis company36:13 - Taxes37:38 - Price sensitivity40:14 - Brand loyalty43:23 - What will the market look like in 5-10 years?50:08 - Cannabis media52:23 - Psychedelics56:38 - Exonerations and social equity programs

Mathilde Collin is the cofounder and CEO of Front. Front is a shared inbox for teams and they were part of the YC Summer 2014 batch.You can check out Front at https://frontapp.com/The YC podcast is hosted by Craig Cannon.***Topics00:25 - Tuomas Grannas asks - What's your favorite LEGO theme?1:25 - What is Front?3:50 - Google Inbox shutting down5:25 - Prioritizing features7:50 - Features that have increased Front usage9:50 - What Front looked like at launch12:45 - Early user acquisition15:40 - Starting Front and meeting her cofounder19:10 - The idea for Front20:25 - When her cofounder was diagnosed with cancer23:20 - Hardest moments running Front25:25 - Employee retention30:55 - Transparency32:40 - Front's office in France33:30 - KP asks - What is the one unique insight about the problem you didn’t have at the start but only discovered later after your launch?36:15 - Did she consider other ideas Front?37:40- Jordan Jackson asks - Email at least for me - has taken on a different meaning in a life of messaging apps and chat platforms. It is more serious in a way. How do you see email evolving and the ecosystem that encompasses in peoples lives?39:55 - If she could remove any email feature41:20 - When did they hit product market fit?45:05 - Meditation

Eli Schwartz is the Director of SEO and Growth at SurveyMonkey. He came in to answer commonly asked questions about SEO.Eli blogs about SEO and growth at elischwartz.coYou can find him on Twitter at 5le.The YC podcast is hosted by Craig Cannon.***Topics00:23 - Does SEO matter in 2018?2:23 - Where should a company start with SEO?3:53 - Who’s doing SEO well?4:48 - Why is Amazon doing SEO well?5:48 - How should you crosslink?7:33 - Paying for links7:58 - SEO don’t dos8:38 - Things that are no longer useful in SEO9:43 - Keywords13:08 - Reviews13:48 - Content17:48 - Images23:08 - Link building28:23 - How much time to give SEO?28:53 - Mobile30:58 - Ranking32:08 - International SEO34:18 - Translation37:38 - International search39:53 - GDPR42:13 - Hiring someone to do SEO44:08 - What to do when you organic SEO disappears46:53 - Metrics for an SEO hire48:53 - Tools for SEO50:23 - Getting started in SEO