Explore the history, syntax, and applications of lambda functions in programming languages during this conference talk. Delve into the origins of lambdas, their intended purpose, and their relationship to data abstraction. Compare lambda constructs in various programming languages such as C#, Java, Python, and C++ to the original concept introduced in lambda calculus. Gain insights into how modern programming languages interpret and implement lambda functions, and understand the differences between these implementations and the original mathematical construct.