Everyone is entitled to their opinion.  This is one I have heard, but definitely not so fully fleshed out before.  I believe that there are an infinite number of possibilities and an infinite number of realities.  In some realities the Earth is round and in others the Earth is flat; you (or science if you choose to believe in it) can choose which reality you are currently living in.

Here’s a shorter video from Bill Nye about the Earth being round.