Infinite Points
It is actually possible to get 7000, 8000 even more then 1 000 000 points, if you feel like spending that much time doing the same thing by using the three following methods.
In Game Players mode do the following, combine the hole punches and paper with holes then examine it. Immediately press Exit. You will be awarded the points as if you solved the puzzle. You can do this as many times as possible before the amount of points you are rewarded for solving is 0.
Another way to do this is to on Entertainment or Game Players keep flipping on the video projector in David Wright's cabin. Each time you will be rewarded 20 points.
The third way to do this is while in Autotech, use the visitors pass on the console and enter the password. Then repeat this. Every time you will be rewarded 10 points.