Noticed a lot, recently especially... sometimes, the smartest/gifted people you know can also be the blindest to things in front of them...(I'd say stupidest, but that's indulging my whine)

It's true that intelligence or talent doesn't always guarantee awareness or perception. Sometimes, the brightest minds can overlook the most obvious things. It's a reminder that we all have blind spots, regardless of our capabilities.

Also find it the other side of the scale (or perceived, at least) - for e.g. those who aren't used to using tech daily/gradual intellectual aging over time as a result etc

They can be stupidly bright in a completely different way. Then usually ruin it with a heavy narcissism or ego.