Can you prepare full meals and plug in dangerous utensils on the subway? Do you even need to ask that question?
I have problems that are so complex, even the most genius programmers would have trouble solving them.
Don't you worry, this derelict couch bought a subway ticket so it has just as much right to be there as you do.
Will the banana guard protect your banana? Yes. Do you have daily activities that endanger your banana? Not really. So do you need a banana guard? Again, no.