so uh...world > camera > viee projection... why 4*4 matrix? not 2*3? or 5*5?
why is the matrix value the way they are? where do i get the value in the matrix from?why inverse matrix? why homogenous? how do i know these values are correct inside to assure the projection doesnt go funky?

i dont really understand wikipedia's explanation

mind elaborate
hint: thread is only for actual smart people, not the kind who can only says theyre smart