PID – a formula for life [1]

From all that we do sense

We now can start to see

The point to reach, just hence

Where we might want to be

Keep things in proportion

And we have much to gain

Integrate past action

Correct how we should aim

Look at where we’re going

To make a difference

Though it might mean slowing

You know that it makes sense

So take control just now

Because we plainly see

That point to reach - and how

And where we want to be.

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[1] PID (Proportional, Integral, Differential) is a 3-element formula used with controllers to move a sensing system from any start point to a target set-point, speedily and with minimum overshoot, ringing or susceptibility to ‘noise’.  Or is it more…?