to multitask requires a certain type of individual and brain...no offence intended to those who cannot. I for one can and to "us" it seems natural. At least to me it is..However, with that said there are times it is very important to focus attention on one task only just because breaking the flow interrupts "the flow" and getting back to the matter at hand requires one to regroup.

cudos to you Wrench! I'm sure you run a very ethical and productive shop.