Re: Does this £1/day include energy costs ?
"You could always burn your own dung for heat and cooking!"
I doubt it. If the tods are dry enough, and your diet high enough in plant materials, then there's a chance it will give out some modest heat because the lignin fibres that your body hasn't digested do have a similar energy content as wood fibres of similar weight. But lookin at what Lester's selected the rice doesn't look to be whole grain, eggs will leave nothing, chick peas will be good, so on balance I reckon he'll be crimping off lengths of regular clay, and that doesn't burn well even if dried.
If you don't have any other choices, dried elephant dung picked up off the African savannah may be a just about useable fuel, but for the reasons above I doubt that Reg writer droppings will be anything like as good. This is why sewage plant companies have to use fossil fuels to incinerate sewage sludges. If Lester has got some of the fine sieves used in (for example) sedimentology, then he could dissolve his dreadnoughts and used tissue in a bucket of water, and filter the resulting solution, rinse a few times, and he'll have the lignin fibres on their own, ready to use as soon as they are dried. Even so, any neighbours may take issue with Lester's renewables, and the actual energy recovered will be very small indeed. Like most other forms of renewable energy, in fact.