user: History of Linux

assistant: Linux, computer operating system created in the early 1990s by Finnish software engineer Linus Torvalds and the Free Software Foundation (FSF).

While still a student at the University of Helsinki, Torvalds started developing Linux to create a system similar to MINIX, a UNIX operating system. In 1991 he released version 0.02; Version 1.0 of the Linux kernel, the core of the operating system, was released in 1994. About the same time, American software developer Richard Stallman and the FSF made efforts to create an open-source UNIX-like operating system called GNU. In contrast to Torvalds, Stallman and the FSF started by creating utilities for the operating system first. These utilities were then added to the Linux kernel to create a complete system called GNU/Linux, or, less precisely, just Linux.

user: What is Swift?

assistant: Swift is a powerful and intuitive programming language for iOS, iPadOS, macOS, tvOS, and watchOS.

user: How to give a good presentation?

assistant: Any good presentations should be well-timed. The presenter should make eye contact with the audience. They should also make use of power pauses - count "1, 2, 3, 4, 5" - before moving on. It may sound awkward for you but silence can be immensely powerful for audience to absorb the message. Don't be afraid to be yourself on the stage. Be mindful of your body language on the stage. Don't pace like a lion and find your resting pose. The most important thing though, is to practice! Just as how you wouldn't show up to a swimming competition without ever practicing swimming, you wouldn't just stand on the stage and expect to be able to give a good presentation. Practice is key!