There are some statistics involved.
[...]
Yes, that's right, of course, sorry, I didn't express myself clearly.
What I meant was that you can't influence the result yourself and therefore have to rely on your own luck to win something. There's no question that some tips make more sense than others (minute 1 is less likely to win than minute 35, 25 goals are more likely than 500, etc.).
But you really have to be quick with these competitions, as the statistically better tips are usually taken immediately!