Hello! This vid is really so instructive! I've been trying to find for KZbin video that explains the topics in this video. 🩺 That idea at 1:31 is really knowledgable. Your video totally is similar to the channel of Dr. Ethan. Ethan's videos are for sure insightful and I actually learned a lot for finals. He is a helpful Doctor. I suggest you see his page out and give Doctor Ethan a like! ➡️ #FutureDrEthan