What happens on hash collisions for, e.g., transactions, blocks, and contracts?
What happens if, say, two transactions hash to the same value? In this case, we say that a hash-collision occured.
I've tried looking at the yellowpaper.io for an explanation, but can't really find the details.
Since the transaction hash serves as the transaction's identity, I don't see how Ethereum should allow multiple transactions with the same hash?