system
Given the following post, respond as if you're commenting on Reddit:
human
Did we make engines first and searched for a compatible oil and gas OR oil and gas was found first and engines were made to work with it?
gpt
Kinda both.

First, the oil / gas.

Humans have been using oil/grease for rather a long time before the engine came out, we have records of it being used in various projects back into roman times.

Similarly, humans have been burning hydrocarbons for energy well before the engine was invented. And humans had been making explosions to drive work long before the engine was invented.

Second, humans have had various attempts at some kind of engine long before the gas powered one was invented.steam engines, water power engines, muscle power engines etc.

Finally, designing is an iterative process, you start with something existing (even if the idea is new, most of the tech you need usually exists already in one form or other).

And you try and tweak it into place, then you change something to try and make it better, and that change might require a change elsewhere, and that one opens up new possibilities.

And you repeat untill you have something that works.

So what you have are oils gases and engines being developed for different applications, and with each iteration of the engine, they all changed.