Randomness

Having real randomness on a deterministic machine is a pretty interesting topic, while one can easily achieve pseudo-randomness by creating a complex algorithm with unpredictable outputs(such as a chaotic system). However, for a microcontroller with the same code whenever it boots up, the above solution will give you the same number every time. So it would be nice to introduce some external chaotic sources, the most commonly used one might be heat noises, which require some kind of temperature sensor. I also heard Lava Lamps are being used as a chaotic source in some real applications - Cloudflare uses 100 such lamps for their random generator - how bizarre!

My dear teachers and parents, my lovely fellow class of 2020, it’s my great honor here to speak as a student representative, and thank you for choosing to join today’s graduation ceremony.

You know, it might be the last time you see most of your surroundings, your classmates, your teacher. I mean, you would not even get in touch with them anymore. Maybe in the near future, you would call them, you would Wechat them, but as long as your life track does not match with them, then eventually you guys would go apart. 

Life, should be as perfect and harmony as a sphere which has the philosophical closeness and symmetry. Naturally, I keep this obsession into science, then I found I was wrong, on both.

It seems like it was difficult to show my feelings to my parents, and because of it I tend to absorb information more than expressing it. Back to the time, the most frequently used body parts of mine to interact with the world are brain, eyes, and ears, the nose is not included because of my rhinitis. Sit at the back left of a car, I staring at the front seat to create extraordinary connections between leather patterns, hear all the things people around discussing, maybe shocking them by pointing out a better solution, then close my eyes go into my inside mind palace.