I thought it was clear, that you should never invest in any coin without a good research. But people are still blindly investing into every single project and wondering why 70 percent of them are scam. Research better and you will find diamonds.
don't blame if you fail, if you don't check every coin you choose.
if you don't know in detail, you have to know it first so you understand how to choose it if it's a good project.
being careful is very important, because nowadays it is easy to fail and it is not easy to find a project that is really good and quality.