I recently had the privilege of a 1-hour speaking slot at SPARC, a yearly two-week camp for top high school math students.
Here's the video: Wisdom for Smart Teens
Instead of picking a single topic, I indulged in a bunch of mini-topics that I feel passionate about:
- Original Sight
- "Emperor has no clothes" moments
- Epistemology is cool
- Think quantitatively
- Be specific / use examples
- Organizations are inefficient
- How I use Bayesianism
- Be empathizable
- Communication
- Simplify
- Startups
- What you want
The part about God was high impact, so it might have been worth it. Especially since you moved on rather quickly to less controversial examples. I don't think your explanation on bread would have the same impact without dropping god in there. I'm not a public speaker, so I might be very wrong here, but maybe it's a trade-off.