Hi Martin. Very informative video. I just have one comment to make. Your audio sounds very distorted. It grates on my ears. I don't know where it's coming from, but I think it's getting clipped. Try turning down the gain on your mic, and normalize in editing. Cheers.
PS. Your verification question is badly worded. Either change it to "What is Pi to 5 decimal places?" or the answer to "314159"
