At the highest magnifications, the differences between the two types of targets become clear.

Read more: X-ray Magnification – Transmissive and Reflective Targets

Wisdom comes with a charge. Usually by the hour.

I like old things. Old shirts. Or old soft sweaters. Old test engineers recommend themselves. Old explanations. You know what to expect. Like a long-term, happy marriage. There’s a comfort level. Fewer mistakes, more detail. Less bewilderment. General competence. Analog testing. The ability to answer the question, “Why?” in waveform. Experience and familiarity sometimes matter. Some dare call it wisdom.

Why do we still worship youth? Haven’t we learned?

Old cars provide a certain comfort, too. As of this writing, my current model has accompanied me faithfully for 14 years and 417,000 miles with no engine rebuilds. Sure, the leather in the driver’s seat is ripped, but it’s still comfortable, and the ride remains blissfully smooth. So, I keep it. For now. Cognizant that the risk-reward ratio is tipping left toward risk with each succeeding day. Am I pushing my luck? Probably. But it still works. I know what to expect. So much else in life isn’t that way.

Read more: Split Personality: Reflections of a Two-Track Mind