As there is more than a thousand altcoin in market it was really hard for us to identify the project or the team behind it. Because as we dont study the said project there's a big chance that we might invest in the scam project. So to avoid it, research and study is very important. But we dont have to think that every coin is a scam because there ia also a lot of good coins in the market that jas a good potential like the dencoin tokens.