France has upped the ante in the quest for fusion power by maintaining a plasma reaction for over 22 minutes – a new record. The milestone was reached on February 12 at the Commissariat à l'énergie atomique et aux énergies alternatives (CEA) WEST Tokamak reactor.
We were absolutely not sure how fire really works (low temperature plasma dynamics and so on) when we used it in caves eons ago.
We also did not build turbines then.
Also, a campfire is not plasma, so you probably shouldn’t be building any turbines either.