A much better explanation why fossil fuels are getting more expensive is that the EROI factor is getting smaller and smaller as fossil fuels get harder and hard

A much better explanation why fossil fuels are getting more expensive is that the EROI factor is getting smaller and smaller as fossil fuels get harder and harder to extract: https://en.wikipedia.org/wiki/Energy_return_on_investment https://en.wikipedia.org/wiki/Energy_return_on_investment