@aras hah, yeah! I wanted to talk about smoothDamp and spring physics so bad but I couldn't fit it into the limited time ;-;

it's super fascinating comparing them side by side both mathematically and practically. like you say, using my expDecay function is easier because you don't need to track velocity as a state, but the nice thing with SmoothDamp is that it has one degree higher continuity (but now you need to keep a velocity state around)