I think mileage will vary. I’ve only ever done a couple of ramp tests, but in FTP tests of various flavours, I’d say it’s a double edged sword. I’d rather not see the numbers and just push, but for me, one of the good things about power is that even on a good day, I’d quit sooner if I didn’t see a number. Put it another way, my true fail point is higher when I’m driving for a target, be it another person or a power target.