You can teach a baby calculus
but first you must teach him precalculus
If you want to teach a baby precalculus
you must first teach him functions
If you want to teach a baby functions
you must first teach him algebra
If you want to teach a baby algebra
you must first teach him arithmetic
But by the time you’ve taught him all that
he isn’t a baby anymore
You could wait until he is a man
to teach him arithmetic
But then you must wait until he has learned arithmetic
to teach him algebra
And if you must wait until he has learned algebra
you must wait to teach him functions
And if you must wait until he has learned functions
you must wait to teach him precalculus
And if you must wait until he has learned precalculus
you must wait to teach him calculus
But by the time he has learned calculus
he has a baby of his own
still waiting to learn arithmetic
And you can teach a baby calculus
but first you must teach him precalculus