[joak]

Photosynthesis is at least an order of magnitude less efficient than photovoltaics in converting light into chemical energy.

[constantcrying]

It is also many orders of magnitude easier to fill large spaces with photosynthesizing devices which will convert CO2 from the atmosphere into usable material. Including foody building materials, fuels.

[willmadden]

I think he's talking about creating food and oxygen to breath, not chemical energy.

[datascienced]

That is also chemical energy! And we make more than enough food already right?

[Zardoz84]

perhaps enough food. But it's very poorly distributed