just in general the most interesting discoveries from science are the ones we'll never be able to Exploit. also anything involving life, honestly, even if it is exploitable, since life is incredible and will never be fully understood due to how gigantic of a system it is where you cannot isolate Change to any one cause or one place or one genome or one body, it happens in all bodies, and they all drive each other to Change further, every moment, in ways unknowable