Investing without any reasoning can just make one to invest without considering the risk and the probability of making lose or making gain from the investment.
Dear, you have started a good thread for discussion over this "Reasoning before investing can save you from lose", where many of us can share a well-planned investment technique for those people who are confused before investing in any project.
In my honest opinion, The key to investing in any project we should explore the project, is the project team is working on their ecosystem or not. is the team collaborating with other projects to make the project successful? we should do TA and FA of the project. DYOR