TiRed – Without sounding rude, I’ve been riding with a power meter for 2.5 years, I’m aware of how much power I can put out for how long.
njee20 – I agree completely, I set my Garmin to just show cadence when I’m on a hard interval, that way I can just concentrate on the riding and not look down every few minutes at the power reading, and I also use my power meter less than I used to, purely because I know from all the time I’ve spent riding with it what certain power levels feel like, so I can easily ride on feel without having to look at the Garmin once. Being able to analyse post ride is incredibly useful though, even though I’m not training for anything.