Is it useful to answer questions to which you don't know the answer in the first place?

Question

IT education

For example, is it useful to gain experience in some technology (node.js or some express) in this way?
I’m already doing practice, but I want some variety and this is where the question arose

Answer 1

1. It is useful to try to find the answer yourself. Or together with the author of the question - but alas, not in this forum, he is not very adapted to working together on a problem.
2. It is useful to then compare it with the proposed solutions from those who have the relevant knowledge and experience.
In any case, "maybe, if we're lucky, we'll hear something new."

Answer 2

If you do not know the correct answer at all, then it is better not to answer so as not to confuse the questioner.
Experience can only be gained by studying something.

Answer 3

Development is always good

Answer 4

It can be useful to look for the answer yourself, but writing without trying the solution in practice is risky. In addition, questions are usually asked after having already searched for a solution on the Internet, so the likelihood that they will ask something that you do not know, but can easily google, is extremely low.