[toxik]

If I count things, I tend to extend the thumb first, then the index finger, then the long finger, etc. This I think naturally leads you to make 3 by extending the thumb, index and long finger.

[tsimionescu]

That's OK, but can you then extend the ring finger but not the pinky to make a 4? For me it's almost impossible.

[toxik]

Fairly easily yeah, on either hand