No, we couldn't cultivate algae. You don't get good at that stuff until after you've already had an industrial civilization for a hundred or more years. Where

No, we couldn't cultivate algae. You don't get good at that stuff until after you've already had an industrial civilization for a hundred or more years. Where will you get the "transparent bags", for instance? Sure after the algae fuels are going good, presumably you can make anything you need... but that's the bootstrapping problem again. Do you know what you needed to start using petroleum? 18th/19th century pumping equipment. Can you bootstrap biofuels with that?