Hi, first time poster here- not college educated, as my handle suggest ... Just a regular guy :) I was reading "The physics book" today (Clifford A. Pickover) and came across the classic "drinking bird" where the body is filled with methylene chloride, the head covered in a felt material - basically a heat engine. Obviously in stable conditions like a room where there is no wind or possibility of disruption the only thing keeping this device from running for a reeeeally long time (please note I didn't say PMM) would be the water supply. Water in a bowl would evaporate relatively fast ... But what if we scaled the bird up and engineered it with safeguards (especially concerning the Methylene chloride) mounted it to a barge floating in the middle of lake Meade (yes, I live in Vegas) and then anchored the barge to the lake bed and we let the bird drink (so to speak) Could this produce measurable power? How about in a large pond on an Ohio farm? Math, engineering & physics are not my strong suits so I leave this up to you - the true scientists to answer this question... Please be gentle- Thank you.