> From the looks of it, he'll not make it, but how can I possibly tell him that? You just should tell him that - "I think this is going nowhere and you will li

> From the looks of it, he'll not make it, but how can I possibly tell him that? You just should tell him that - "I think this is going nowhere and you will likely burn out and have a crisis." And then when in few weeks/months he will start having doubts, he will have a reference and hopefully it will help him to bury the project faster and move on to other things. At the very least he'll have an option of coming back to you and asking why did you say what you said and you two can go on from there.