Instead of dismissing people's optimism with an impossible-to-refute "argument from field experience", why not write up some of your hard-won lessons so interes

Instead of dismissing people's optimism with an impossible-to-refute "argument from field experience", why not write up some of your hard-won lessons so interested people can educate themselves? I'd be very interested in an account of real world PV solar costs and hurdles by someone who's been there, done that.