Well 1000-10.000 times is physically possible aswell. I do understand what you meant, though 20 times is just not enough to be able to say that something is wrong/right.
With kind regards,
Rashar.
Repeating it 10,000 times would take approximately one entire day - 24 hours - of constant testing.
That is 3 work-days straight of doing nothing but pressing two buttons and then recording the results.
Maybe someone on earth would voluntarily do that, but I cannot fathom that person.