Do you drive a car you built from scratch? How can you drive from A to B without first understanding how a car works by building one? And since you already built one, why not just keep using that one?
Or maybe you have built a car. But did you type your message on a computer you built yourself using some silicon and a home-baked x-ray lithography machine?
I definitely think there can be value in reimplementing something for educational purposes, but often knowing how to use something without necessarily being able to build it yourself is just fine. And those things you do build for educational purposes should almost always be abandoned after serving their educational purpose.
My limited experience with probabilistic sorts of programming though is that the risk of misunderstanding/misuse is very high relative to the implementation complexity. Cars and. X-ray machines don't have simple implementations.
Often very little code but a lot of opportunities to goof up one assumption or another.
But yeah I'm probably overgeneralizing from limited experience.
Or maybe you have built a car. But did you type your message on a computer you built yourself using some silicon and a home-baked x-ray lithography machine?
I definitely think there can be value in reimplementing something for educational purposes, but often knowing how to use something without necessarily being able to build it yourself is just fine. And those things you do build for educational purposes should almost always be abandoned after serving their educational purpose.