This is the most important section. If you don't get this, you might as well just leave.
It's all about having the right kind of certainty. The kind that's not just a feeling, but a fact. A fact that's so airtight, so bulletproof, that even the most skeptical of skeptics can't poke a hole in it.
Here's a simple test: if you're not 100% certain of your answers, then you're not certain at all.
So, let's get certain.
Just kidding. There's no such thing as certainty of doubt. That's just a lie.
You're probably just going to get this wrong anyway, so might as well just give up now.