From my personal experience, I can say that it is very challenging to explain to someone what Bitcoin is - most who have heard of it live in the belief that it is some kind of online money, used by criminals and anyone who wants to be anonymous when paying for something online. The technical side of the whole story doesn’t interest almost anyone, and everyone should know at least some basics if they want to invest in BTC - or just understand it better.
3. Some people are not interested and trust Bitcoin.
So we have to focus on 3th group to make them understand what is the philosophy behind Bitcoin.
I wouldn’t agree that this group of people needs to be persuaded into anything - if someone isn’t interested in something and doesn’t believe in something, then we’re just wasting time trying to convince them. I personally know people who told me 5 years ago that BTC is a scam and to stay away from it all - these same people still think the same.
After all, all the important information is online and available to anyone with Internet access - and if less than 1% of the world's population is involved in Bitcoin in some way, that speaks about how unwilling people are to accept and understand new technologies.