Quantum field theory

To make it simple it has to be broken down into its three parts.

Quantum: An amount.

Field: A meadow.

Theory: The body of principles underlying an area or field.

You have oversimplified here. Not all fields are meadows.

A field of turnips would give a completely different result.

How intellignet should the answer be?

I don't think I could beat the first two paragraphs of the Wikipedia page on this. It's a theory that all fundamental particles in the standard model are, under it all, quantum fields, which we can't perceive directly.

I was tempted to think that QFT is in opposition to string theory, but the article implies that QFT encompasses string theory and other theories. "In high-energy physics, string theory is a type of (1+1)-dimensional QFT."

Yep that's the quantum effect right there...it all depends on what the field is...but you don't know that in advance, a field of heifers be fierce different to a field of cabbage or a meadow for that matter.

Don't even start me on spooky action at a distance, them swingers got short shrift here...