1. Am I just imagining things, or do the results depend on the speed?
2. I'm able to erase the shape very easily at max speed, despite setting it to persist. Have you studied how much shape loss is required for the shape to vanish? (ex video https://youtu.be/zMQkTyzdphc)
Interactions will play out very differently at different speeds because you are interacting with a sped-up/slowed down version of the CA.
2. We haven’t done any rigorous studies of regenerative capability, although this is certainly on our to-do list. From empirically playing with them, models seem to be more susceptible to damage to the centre of their bodies than to limbs, likely as a result of “growing” outwards.