I did this at a previous company, and got blackballed for having a "negative attitude". 6 months after I told my manager and the technical architects that it w

I did this at a previous company, and got blackballed for having a "negative attitude". 6 months after I told my manager and the technical architects that it wouldn't scale, the project got cancelled because it didn't scale. No one suffered except for me because I had the balls to open my mouth.