"Thinking" means spamming a bunch of stream-of-consciousness bs before it actually generates the final answer. It's kind of like the old trick of prompting to "think step by step". Seeding the context full of relevant questions and concepts improves the quality of the final generation, even though it's rarely a direct conclusion of the so-called thinking before it.

"Thinking" really just means "write on some scratch paper" for llms.