Crypto currencies are even worse than money in at least one thing: its incredibly hard to understand how todays money economy works to begin with, and there are many viewpoints on how it REALLY works in reality (if you call the current economy "working")...
Crypto currencies are even worse... now not even a mathematician might be able to tell how it is really working, its inner workings are intentionally obscured from sight. And even how it is supposed to work on a higher, economical level is kinda obscure, enough so that again, the normal citizen will have no chance to understand it...
And again, never invest in what you do not understand (which is why 90% of the population shouldn't even try to use money).
I think this is confusing two things - the workings of an economy, and the mechanism by which something works. It's like saying you shouldn't have money if you don't know how the money is printed, or invest in gold if you don't know how gold is mined.
Well, what I meant was:
If you don't understand how credits / debits work... don't apply for a credit. If you don't know how the stock market works... don't trade.
Don't buy shares of a company producing goods you don't know, operate under a model you don't understand, trade with things that are alien to you.
Don't invest into currencies if you don't know how the international exchange works.
Don't spend money if you lack the ability to watch your bank balance and avoid going into debt.
I might not have been clear enough, but yes... there are MANY people that should not be allowed to use money. Because they lack the ability to judge how much they are able to spend without spending too much. You know, the people who are adamant they need 2 cars when they can hardly afford one. That forget that buying the car is only part of the spendings they will do. That forget to calculate the cost of gasoline, repairs, the parking space.
That are unable to see how buying a used car for 2000$ that might break down after a week is NOT a good deal.
You don't need to understand the last bit of economics or have a PhD in it to be able to "understand" something. But you need to do your homework, and invest some time and brain into something before you go all out and buy that overvalued share, invest big into bitcoin mining when the cost of the equipment and electricity is far larger than what you can make in 1000's of years with mining, buy that second car you can never afford with your low wage.
In case of cryptocurrencies though, you need to understand how the system works, on a basic layer. That would tell you a) mining was only a good idea in the first few years, until mining became unprofitable even on GPUs, b) buying bitcoins to MAKE MONEY is a bad idea because of the hyper-fluctuations of its value, c) the whole concept is still forming, and we don't know if the concept itself will survive (because governments and financial institutes worldwide are not amused), or which of the cryptocurrencies will survive (bitcoin might not be the one)...
I will not even go into how the whole thing is built on trust alone, and completly at the mercy of hackers should an exploit be found as there is no-one backing it.
In short, it would tell you that while its an interesting new concept, and one of the only ways of getting away from the current financial system while still being able to buy something with it, you should probably be VERY careful on how much you invest into bitcoins.
Again, I am not saying you need to understand on how the blockchain works on a technical or mathematical level... but you need to understand at least on a larger scale what systems drive it, for example that there is NO central authority and thus NO backing of your investment should anything go wrong, no way to recover money lost due to a hardware or software failure, or if your wallet gets hacked.
If the extent of your IT knowledge is how to turn on your computer, stay the hell away from bitcoins!