Idea generation versus execution

I can write two hundred words in five minutes.

Yet it takes me several hours to write particular two-hundred-word essays.

I write daily in my diary without a specific goal in mind other than capturing memories, facts, and thoughts. Then, I conduct review sessions in which I highlight passages worth developing further and deep writing sessions where I focus on turning drafts into publishable essays.

Generating ideas is cheap and fast.

It's curating, developing, and shipping those ideas that require the most time and effort.