It's only wrong if you push the follow-through onto others. That's lazy. If you're really curious, spend 5 minutes on it. In this case, if you ask "can we just

It's only wrong if you push the follow-through onto others. That's lazy. If you're really curious, spend 5 minutes on it. In this case, if you ask "can we just do this" you should follow through with "how big is that actually, what's of comparable size?" We can all google this, or learn how to. It's a useful way to learn. You won't learn how to find things out, by always just asking "can't we just" questions and walking away. In this case, soon you'd find out that 0.2nm is on the same scale as the spacing between individual atoms in a silicon crystal. Literal "drill" bits for removing 1 atom at a time are obviously out of the question. It is 10x smaller than the 2nm, the scale of the best x-ray lithography computer chip manufacturing processes.