"I see a non-negligible number of false claims and false promises on Julia's performance on the web every now and then. and when people test it for real product

"I see a non-negligible number of false claims and false promises on Julia's performance on the web every now and then. and when people test it for real production code they get disappointed with it." Can you cite one or more specific examples of this? I'd like to see what you mean. Edit: You seem to be a Fortran fan