Given a circular pizza, what is the maximum number of pieces that can be made with just 4 cuts?

A cut with a sharp knife is a straight line which, considered on its own, would split the pizza into two pieces. You are also not allowed to rearrange the pizza pieces between cuts.

You may wish to try the problem with 3 cuts first.

And, just a reminder that pizzas are

*flat*! For the 3D version of this problem, look at the Cake Slicing question.

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