A few days ago, I shared my perspective on the current polarization in our society. I discussed how algorithms influence people's mindsets by providing increasingly tailored content that individuals are more likely to enjoy. These mathematical algorithms are based on a concept known as collaborative filtering. This is why, for the fourth episode of "The Laws of Stan," I decided to host Iaroslav Geraskin, a Machine Learning Engineer at TikTok. In this episode, you will discover how the majority of algorithms are created and modeled using mathematical skills. As always, if you feel this interview may not be suitable for you, don't worry. We're taking a step-by-step approach, shedding light on the mathematical aspects involved in the profession of a machine learning engineer at a top-tier company like TikTok, without delving into complex computations. Enjoy your listening experience!