Pre-installed
We seem to be born with a very specific set of hardware and a pre-installed operating system. Through life we install new software, most of which is recommended to us by family, friends and society. We cannot change our hardware, but we have it in us to find alternatives for programs. Some that are better, cheaper, uses up less space and memory. Or we can delete a program all together.
# Do not let others dictate what software you run.
# Be wary of paid programs or programs with adds, when there are open source alternatives.