How do you deal with these "one year non compete agreements" or "every idea you think while working for us belongs to us" contracts that quite a lot of firms ma

How do you deal with these "one year non compete agreements" or "every idea you think while working for us belongs to us" contracts that quite a lot of firms make you sign to work for them? I kind of want a start a company with my own ideas, not one I gave to a company and have to steal back from them.