[chompychop]

How do they definitively know it was used as a musical instrument? It could just have been something punched out on the bone just for fun, by the Neanderthal. Sure, you can make music out of it, but that's not scientific evidence to conclude that someone did use it to make music, is it?

[Tor3]

Try punching random holes - and see if it creates a musical scale as we know it (go for a pentatonic scale). It's very unlikely that the placement and sizes (placement also affect sizes) of the holes will create that scale, even if you perform the random experiment again and again and again.