Most engineers switch tech for the wrong reason

A shiny technology. A faster tool. A new language...

But when you do the numbers, most “upgrades” don't make any sense.

I almost rewrote a Go service to Java because the tooling looked nicer.

On paper it seemed fine. Then I did the math and the numbers told a different story.

That's because:

• Percent gains mean nothing without cost

• A rewrite that only helps one repo doesn't scale

• You need techniques like two way doors and stop-loss

• AI gives speed, but your judgment gives direction

Sunk cost is a real thing on the opposite direction.

You may need the change, but you don't want to throw away all the work you've done until now.

That's why I wrote about when to switch tech.

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