Engineering classes taught me
a lot of things I rarely use,
like atmospheric pressure
and pressure differentials
and differential equations
and equations of momentum
and moments of inertia
and inertial frames of reference
and A-frame trusses.

Hypersonic shock tubes
and shell and tube heat exchangers
and heat capacities
and capacitor dielectric constants
and constant gravitational acceleration
and acceleration from rest
and how to function without rest.

But the main thing I learned
in engineering classes
was how to bang my head against a wall
taking into account
the material,
the structure,
the thickness,
the strength,
of the wall
until,
undamaged,
I pop out the other side.

That, I use every day.