Sometimes you just can't win with teachers.

Thesis' are incredibly difficult to master.. While your teacher didn't give you great guidance, he did show you the general gist of what you should avoid when writing one - i.e. - being too specific or not specific enough... A thesis balances in between both. Don't discourage yourself though! With practice, I'm sure you'll turn into a pro

There could have been the possibility of making it too general? Ask around for people you trust to check your work next time. Either way, it sucks :/ fyl op.

Sounds like every teacher I've ever had.

I hope you mean ex-Teacher!

If you have the chance to ask questions, then maybe you should have double checked your final thesis before submitting?

What teacher wants.. Its always a mistery

It's not the easiest thing to write, I do hope you get better indication or help the next time. Good luck Op!

This is why I never listen to my profs. They never stand by what they tell you.

You need to leave room for debate but not make it seem like you didn't pick a side or know what you are writing about