which is what destructive in average larry sense because you'll be surprised if you know about michelle reed and why she was brought in, which is there's a sort of nationwide kind of war on teachers going on, which is find the bad teachers, get rid of. the and then we'll fix education, and a bunch of presidents want to be the president that fixed education. we can talk about whether that makes sense but the idea was to get rid of bad teachers. right? and in a larger destructive feedback loop enengine gird the value-add model, get can rid of good teachers because good teachers have been quitting, retiring early, and most of all they've been moving to affluent suburbs that don't have the scoring system. and right now we have a nationwide shortage of teacher is. so i would argue that this regime of this opaque value-added model hat been very bad. something that is especially insidious about that. talk about algorithms and that can sound techy and foreign, things we don't interact with. but a lot of the algorithms we're talking about here, that we both work on, have tons of similarities, sometim