Thanks for that link. I wish I understood anything it talked about, but I don't. Thankfully, like driving a car, you don't need to know all the technical details to use bitcoin.
As an average user, you need not concern yourself with stuff like this as there is a lot (e.g.
CLTV,
CSV and so on). You are 'okay' without knowing, up until the point where something like this affects you directly.
I don't know why, this site don't work in my country, a lot of people tried to contact support and nothing...
What country is that (make an edit to your post, instead of posting an additional reply)? Here's the content of that particular page:
