If you email a CEO or President, you're not emailing them. You're emailing a team of EAs who are filtering for them. Their fame leads to a lot of problems in the inbox: begging letters, death threats, and irrelevant noise more than you can imagine.

They also don't know much that you can probably make use of. They might think they do, and you might think they do, but they got there mostly through knowing how to talk to boards and investors, not by being able to engage deeply in expertise that is applicable to most people looking to make their way in the World - and if becoming a CEO of a major tech firm or President is the thing you need the help with, you probably know them or people like them already.

I've met quite a few famous people in tech over the years, particularly open source, and have had some short and some long conversations with many of them. I've found most people pretty approachable.

I also know through another side of my life quite a few people in the media and am an acquaintance of someone who is a household name in the UK. Through him, I've met famous sports people, writers, actors, etc., and through that and other networks I know people who have worked behind the scenes on major TV and theatre shows who have met hundreds of famous people.

The one thing that unifies all of them is obvious, but seemingly lost on a lot of people who "other" those whose names are known to them despite never meeting them: they're all just human.

They're not "other", they're us. Including everyone you see on TV, everyone you have read about in magazines, everyone you see on a stage.

They have to put up with being recognised and people dealing with them in strange ways (how would you really deal with a stranger asking for a selfie while you were eating dinner with your family in a restaurant?), but they still do all the things you and I do. As the old saying goes, they all have to put their trousers on one leg at a time in the morning.

I'd definitely encourage people to seek out experts (not just "famous people" unless those people are famous for expertise), and engage them as you'd want to be engaged about your expertise. You'll find most people will be approachable.

But emailing that specific list of people is unlikely going to get you much beyond a template reply from one of their army of assistants.