Emerald, what i was trying to say is that digging is natural skill, so simple that only dump people couldn't know how to do it.
Don't put digging holes near metallurgy. Sure that if you look in game, it is as simple as clicking a bit and done. But it is not for your character and since it isn't, why do you wan't to make it the same, while it could reflect better the reality?
HEY!!

I just happen to be dumb people.
But I think what Emerald was basically saying is that Armor wearing, for instance, is also a simple skill that only dumb people wouldn't know how to do, yet the better you get at strapping on leather, the more damage you can defend against with it.
Real life expansion of this thought: tablating guitar solos. I mean sure, if I wanted to, I COULD sit down and figure out a guitar solo by some crazy shredder, it would just take me about 2 years longer than the 5 minutes it might take my guitar-instructor. But who's gonna put in that 2 years and five minutes? So the better you are at it, the much more likely you are to actually commit the time to do it because that time is far less. So if you wanna dig a whole to China, you'd better believe that no one will ever EVER dig it if it would take them 75 years; it reaches a point where its not a question of how committed you are as a human being, but how committed ANY mere human could ever possibly be.