[epicureanideal]

I disagree, as both an engineer and a manager.

CSS grid is only recently becoming a reasonable tool to use in practice. I don't think any of the top 1% of front end engineers I know would be able to use CSS grid without looking at the documentation.

Based on experience, the kind of person who would be able to use it from memory either 1) is very skilled AND had a reason to use it recently, or 2) someone of medium skill who just recently read the spec but in almost all other ways is less skilled than the people I mentioned in the first paragraph.

[thirdsun]

> I don't think any of the top 1% of front end engineers I know would be able to use CSS grid without looking at the documentation.

You probably don't mean it that way, but not having to use the documentation surely isn't a requirement for competency. I resort to the docs all the time, even with topics I'm quite famialiar and experienced with.

[tr1coder]

That depends on your company I guess. If your entry salary is, or is close to 6 figures then yeah. But if you pay that only for skilled developers _specializing_ in front-end then it is not too much to ask that they are up-to-date with their field.