Why is it so much easier to tap/drum your fingers on a table from your pinky to your index finger compared to index finger to pinky?

Question

Why is it so much easier to tap/drum your fingers on a table from your pinky to your index finger compared to index finger to pinky?

In: 2

Answer 1

When you go from the index finger outwards, you have to suspend your pinky and ring finger up at the same time which is more difficult (those two tendons aren’t as good at working independently). You can train them, as you would if you were learning piano.