This is one of the slides I created recently for my talks, and it seems to be getting the point across.
Your answer?
The follow-up question: is your job and life more similar to the constant problem-solving and mental challenge of the cab driver, or to the routine or the bus driver?
Pascale wrote an excellent article on this, check it out: Brain Plasticity — How learning changes your brain.
Have a good Good Friday/ Passover/ holiday/ weekend!