Dr. Richard Stallman gave this educatational talk earlier this year in Switzerland.
The talk is in English.
It’s two hours long.
It is highly informative and quite humourous.
If you do not yet know anything about “free” software, I can recommend this as an introduction to the subject.
Link: “https://youtu.be/7ZSPf7YnGfE”
Dr. Richard Stallman started the free software movement in 1983 and began the developing the GNU operating system in 1984. GNU is free software: everyone has the freedom to copy it and redistribute it, with or without changes. The GNU/Linux system is used on tens of millions of computers every day, including your Ubuntu-Mate machine.
I do not seek to open a discussion or debate on this subject here. Others, if they wish, are free to do so. I’ve posted this link as an aid to people who are interested in hearing what “rms” has to say.