It's a little different for a lot of other accelerators. YC takes batches of, what? like 40 companies or so in a batch? Most other accelerators are smaller with

It's a little different for a lot of other accelerators. YC takes batches of, what? like 40 companies or so in a batch? Most other accelerators are smaller with class sizes around 10. If YC is shooting for 40, and gets 37, it's maybe not a huge deal (8% under target). You could even make 42 or 44 offers and plan for a certain acceptance rate, end up with 44 probably isn't the end of the world (110% capacity). If another is shooting for 10 and gets 7, that's a 30% drop which is probably enough to mess with the economics of the accelerator. Similarly, if they make 12 offers planning for a certain acceptance rate and end up with all 12, they're at 120% capacity, which also might be enough to mess with the economics. I still think exploding offers suck, but YC is in a much stronger position to be relaxed about them than others.