It can. 48 hours might also make you an expert, or a lifetime, or you may never become an expert, or you might be born an expert. I was born an expert in scream

It can. 48 hours might also make you an expert, or a lifetime, or you may never become an expert, or you might be born an expert. I was born an expert in screaming very loudly and getting lost, for instance. It depends on who you are and what you are trying to become an expert in.