misha arens is is a researcher there. if he wants to change colors, right? yeah. but the poor little zebrafish, how do you do it? they use a they use virtual reality and they trick the zebrafish. the zebrafish is a tank and they project wavy lines on the sides. and the bottom of that so is as fast as zebrafish are swimming against the current. he looks like he's getting nowhere because. the lines are going in the other direction. so he keeps trying and trying and try be like if you were standing on a street corner and i was i was rolling a scene beside, you. and so you kept thinking you're getting somewhere. no, i'm still right here. i still see dearborn station right there. i'm not getting anywhere. and i'm i'm sweating on amount of breath. how can i do this? and so then they would measure what happens with the zebrafish. this happens. at what point does that zebrafish give up? and there is a moment when they do and it's called futility induced passivity. and there's a point at which the zebrafish just says, that's it, i'm done. and he waits and then he goes back