What problem does BEM solve?

Question

css

1. Please give a real example of a situation where the use of BEM naming rules justifies its purpose (as far as I understand - component isolation).
2. What is the problem with traditional naming?
3. Are there better alternatives for solving this problem (now or in the foreseeable future)?

Answer 1

https://ru.bem.info/method/solved-problems/ here, in principle, there are examples and explanations.
In short, BEM increases the reusability of the code, that is, you can use various blocks from your code in other projects.