senior developers - in the year of our Lord 2025 - should not be using google :)

Some of these are too embarrassing ever for juniors. No senior should struggle with big o notation.

I think this is normal especially if you’re changing languages, frameworks, codebases. Some people are gifted in memorization of these things and others of us just forget if it’s not needed. I do the same thing with people’s names.

If you’re working on the same type of thing everyday you’ll likely remember how to reverse an array in JavaScript. The other day I was trying to remember how to reverse a string in JavaScript… that was fun.

“You don't need to know everything. You need to know how to find everything.”

This is the knowledge in the head vs. in the world thing from Design of Everyday Things - if the knowledge is easily accessible in the world you will naturally keep it there not in your head. Maybe Google/LLMs are so fast this is the result.