If you just wing it and make some blunders in the beginning your opponent will underestimate you and will end up in a much more unique mid game which is more like outside of their learned theory.

This is unironicly my natural playstyle. As long as i keep my head cool while trying half baked plans seeing what sticks, i am basically sacrificing material to create a more chaotic board state, priming overconfidence to make a bigger blunder than all my early ones combined.

I play like that even when I have ample time to think