So could you use the higher math skill to peel a potato?
Here's an invention idea: the S.C.R.O.D.D.
The S.C.R.O.D.D. (Savage Caterpiller Remotely-Operated Delivery Droid) is useful to the evil mastermind who desires to plant bombs or other such villainous devices throughout a city in order to, say, hold it for ransom, and who wishes to do so from the comforts of his or her mountain fortress or secret underwater base. The droids look like daschund-sized caterpillars wearing small aluminum backpacks (where the goods to be delivered are contained.) Their size, lightweight construction, and design allow them to move about easily in sewers, ventilation ducts, or along tree branches. The SCRODD comes equipped with a single camera-eye, allowing the controller to guide the droid along its intended path.
I suppose weaknesses could be contrived (that seems to be the pattern)...you could say that with increased distance from the controller the SCRODD's processors are apt to make a more liberal interpretation of the remote controller's instructions, or something like that.