I need to do very good research to invest in Ico. Especially during these times the market is very stagnant and most Ico is losing value. But if you trust in your project, you can invest in an ico you are safe.
When I search for alts for investments I look if there is any product is developed. If there is no product and only the idea I do not invest in such altcoins.
I'm sure this is the right decision. It is necessary to be very prudent.