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Depends on what you define as "tech", no?

Indeed: ships, metallurgy, chemistry...they had lengthy births.

Chemistry is a science. Chemical engineering is the application of that science (to create technologies).

Chemical engineering is mostly about 'plumbing' - pipes, tanks, valves, etc. Fluid dynamics. It's much closer to physics than chemistry most of the time from what I understand.

Chemistry doesn't have the same stereotypical relationship to engineering that physics does.

(This comment is based on what these terms mean in the UK at an undergraduate degree level. I'm an electronics engineer and I know a couple people who studied chemical engineering. If the terms mean something different elsewhere in the world I'd love to know :) )

If you saw how an industrial chemist works you’d see it more akin to engineering than science.

By value add, I mean. But I don't know what's ambiguous about what is and isn't tech?

tech is anything made, invented, not natural. So, the stirrup, eyeglasses, agriculture, our control of fire.

Yea. Anyways, what's so controversial about my comment you responded to?

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