I was just sittin around thinking about the notes on the fretboard and started to wonder, "Why do the note go F, F#/Gb, G, etc, etc, etc?"

Can someone explain why there are two names for some of the note on the same fret? Why would you write Gb rather then just say F#? I do not see it making a difference since the notes are technically the same, only a different name.

My theory has not been that great and I am now stating to get into it and this question has been buggin' me.

MSF