
Episode 391: How Assumptions Shape Financial Planning Outcomes
The Rational Reminder Podcast
Dealing with client bias and recency effects
Adam suggests inverting assumptions and exploring clients' feelings to address biased inputs.
Financial planning is built on assumptions — about markets, inflation, longevity, human behaviour, and even the questions clients bring into the room. In this episode, Ben and Braden welcome a diverse panel that originally came together at the FP Canada Conference to explore how those assumptions influence planning outcomes in practice. Joining them are Adam Chapman, a retirement-focused planner who helps clients turn their money into memories; Joe Nunes, an actuary with decades of pension and longevity experience; and Aaron Theilade, Director of Continuing Education at FP Canada. Together, the panel unpacks how to make assumptions credible, how to stress-test them, how to navigate client bias, and how planners can blend math with humanity to create better client outcomes.
Key Points From This Episode:
(0:00:04) Why this episode: recreating a conference panel on planning assumptions.
(0:01:03) Braden on the panel's value for planners and DIY investors.
(0:02:32) Meet the guests: Adam, Joe, Aaron, and Braden.
(0:06:04) Assumptions matter: directional accuracy > prediction.
(0:07:47) Actuarial view: start with inflation, bond yields, and risk capacity.
(0:09:38) Engineering mindset: plan for expected and unexpected outcomes.
(0:13:21) Client pushback: longevity surprises and hidden assumptions.
(0:16:59) Asset allocation: strategic, goal-based, informed by behaviour.
(0:20:57) Software limits: life is too variable for perfect modeling.
(0:22:01) Behaviour gap: retirees spend less over time despite inflation.
(0:25:18) Software guides; planners interpret and humanize outputs.
(0:28:48) Use assumptions based on the specific question (e.g., withdrawals).
(0:30:31) Always ask: "Why are we modeling this?"
(0:34:15) Handling bias: reframe assumptions to reveal inconsistencies.
(0:38:19) Assumptions evolve: returns, spending, and research all change.
(0:42:38) Longevity beliefs: explore "why," not just the data.
(0:50:38) Core truth: every plan is wrong — planning is iterative.
(0:52:20) When to update: depends on age, goals, and material changes.
(0:57:23) PWL approach: twice-yearly updates + adjustments during extremes.
(1:00:03) Tips: focus on behaviour, communication, goals, and integration.
(1:10:02) Success: relationships, impact, freedom, and sharing knowledge.
Links From Today's Episode: Meet with PWL Capital: https://calendly.com/d/3vm-t2j-h3p
Rational Reminder on iTunes — https://itunes.apple.com/ca/podcast/the-rational-reminder-podcast/id1426530582. Rational Reminder on Instagram — https://www.instagram.com/rationalreminder/
Rational Reminder on YouTube — https://www.youtube.com/channel/ Benjamin Felix — https://pwlcapital.com/our-team/
Benjamin on X — https://x.com/benjaminwfelix
Benjamin on LinkedIn — https://www.linkedin.com/in/benjaminwfelix/
Editing and post-production work for this episode was provided by The Podcast Consultant (https://thepodcastconsultant.com)


