[brucephillips]

I don't see how desirable unit economics refutes GP's claim that the initial market was lamp oil.

[afarrell]

It doesn't, but the lack of other good sources of indoor lighting refutes the claim that the lamp oil market is a toy.

[hnzix]

> refutes the claim that the lamp oil market is a toy.

GP never made that claim. The point is that lamp oil was perceived as a toy before people realized the (blindingly obvious in hindsight) utility for indoor lighting.

[afarrell]

What did they use lamp oil for then? I thought lamp oil was always for indoor lighting...