I am reading String Theory and M-Theory: A Modern Introduction by Becker, Becker and Schwartz. I've tried to read this book before but not succeeded because I didn't know enough math or physics. This time, I feel like I am following it much better but I still don't understand what a string is.
All the concepts I've read so far either to fall into the category of stuff that could be described by a harmonic oscillator or the category of stuff that could be described by a point. But what does a string offer that these concepts don't? I still don't really understand what a string it is and I think that's partly because I don't see what the idea offers that's new.
How is a string in string theory different from a harmonic oscillator or a point?