Missing Matter

And? Don't stop there. What considerations?

Thank you.That's the first time I've had a tiny hint of what the math is like for M( etc) theory.I know that the whole thing would be incomprehensible to me but having just a hint is good.Can we take the next tiny step in adding a bit more detail? I know what some equations look like (Schroedinger's for example) and even understand a bit of what goes on there. What does the math we are talking about "look like"? Is it one equation? Lots? Does it have many variables, parameters? a few?

Funny you should ask. Once, long, long ago I did actually have some idea and a bit of group theory too.However, even then I had not gotten to what you are asking for. I finished an honours BSc in physics and realized that I couldn't handle any more math. And I've forgotten what I did know anyway.Once upon a time I remember telling a doctoral student that some things had to be expressed as math. He insisted that it is possible to at least explain the concepts without it.I happen to disagree with him. I'm wondering how far we can go without jumping headfirst into the deep end to start with?A good example is the dimensions thing: I can understand how such a term as a d-10 may appear and need to be handled.(btw, I did try to read a post grad text on GR on my own some years ago. It was not a great success I'm afraid. )

I am fine with that so far. Nice step by step addition of complications Son. Thank you,Don't stop.