Biology does not do what we literally expect materials to do. Is that empowering or limiting having material as a mind of its own? I think it's both, right? So it raises difficulties because if you're using the old mindset, which is a linear kind of extrapolation of what's going to happen,. You're going to be surprised and shocked all the time. On the other hand, it's massively liberating. advances in regenerative medicine require us to take advantage of this.