Like what? Replacing cylinder head is similar to differntial equations?
I'm a mech eng. I'd rather replace a cylinder head than solve a differential equation any day of the week! In fact, I've never used ANYTHING that course told me in 20+ years since graduation ...
BUT ... there is no way in heck that I want to work on cars. Bikes, yes. Cars, nothing beyond regular scheduled maintenance. My car currently has a leak somewhere in the exhaust manifold / EGR area ... which is on the back of the engine, underneath the shelf below the windshield (no way to reach it from above), with access from underneath partially blocked by the drive shaft and steering rack and subframe and heater hoses and who knows what else. Some clown (most likely a peer of mine in Germany) designed this realizing that it was a trivial exercise to put all this stuff together with the engine out of the car then stick the engine into the car on the assembly line with all that stuff already on it. No consideration whatsoever was given to ever having to fix this in the future.
I'll be paying someone else to fix that. I have a feeling that by the time I add a clutch job and a timing belt job to this, the easiest way to do it will probably be to pull the engine/transmission and fix it on the bench. (P.S. In the grand scheme of things, I can't really complain about this. The car has just short of 400k on it.)