Dive into the internals of Kotlin in this 41-minute Google I/O'19 conference talk. Explore how Kotlin's modern language features and rich extensions work under the hood. Learn to use Android tools to investigate these internals yourself. Discover insights on primitive types, bytecode, memory profiling, and various Kotlin features like 'when' statements, lazy properties, unsigned types, ranges, inline classes, arrays, lambdas, extension functions, default parameters, and coroutines. Gain a deeper understanding of Kotlin's inner workings to enhance your Android development skills.