Rule 65

In older times

Engineers had hands-on experience,

Technicians understood how the electronics worked

And what it was supposed to do,

And layout technicians knew too-

But today,

Only the computer knows for sure

And it's not talking.

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this awesome little poem is actually quoted verbatim

 from the admirable NASA's list of 100 rules for its project managers (one edition here)

the aweome circuit is definitely courtsey of GhettoMole