Which Came First?

The question is often asked about chickens and eggs? Personally I have never understood it as the answer seems obvious to me, but not everyone agrees and opinions differ.

What is agreed is that everything that does not occur naturally in this world, and in an office that is almost everything from the desk, to the chair to the computer - everything except the people, started with a single thought. Every journey began with a single step. There are no thoughts that are unimportant and none should not be incubated and allowed to die without being shared, like an egg that remains unhatched.

I welcome all your thoughts and am happy to entertain your thinking.