One of the most important skills I learned from my engineering education was number sense.

It’s an intuition about what answers are reasonable. Not enough for precise work, but a useful barometer for gauging if you’re on the right track.

These back-of-the-napkin style problems turn out to be very useful in life.

Here is an interesting paper in Science that does these kind of rough calculations for some interesting questions:

Building /bright-moments - minting onchain art IRL | /purple #15 | FID 129 #magikarp

Florence, Metropolitan City of Florence, Italy

Here is an interesting paper in Science that does these kind of rough calculations for some interesting questions: https://www.astro.princeton.edu/~burrows/classes/542/papers/Patryk.1975_Weisskopf.pdf