Copying is awesome!
2 guys each build a machine. One works really fast because the dude invented ball bearings, the other could move huge loads because he invented stronger steel.
Guy one looks at guy two's machine and says "wow I with I thought of that, care to explain how it works?", guy two replies; "sure, just tell me how you made that great steel!"
In the end both machines were better, and everybody was better off.
THIS is why I think the patent system sucks and fanboyism about who had what feature first is the stupidest shit in the world.