Re: Just another [proprietary] pre-installed program
Go to http://www.sagemath.org/, look at the second sentence of the first paragraph:
"It builds on top of many existing open-source packages: NumPy, SciPy, matplotlib, Sympy, Maxima, GAP, FLINT, R and many more."
This _bundling of many packages is what the Mathematica design philosophy is trying to avoid_. The creator of Mathematica, Stephen Wolfram spent more time trying to get various math packages to work together than doing actual physics.
So he designed a 'kitchen sink' math program (Mathematica) where typically you just needed one download to do everything you needed.
How this ties into the Rasberry Pi philosophy of getting people started in computers? You just need a _single_ download to do everything (or a lot) and you don't have to worry about version conflicts within/between supported math libraries.
Mathematica (can be used as 'training wheels' for math (and also now for other scientific fields))
SageMath (if a person is further along in math and wants to continue in their own very specific direction.)
Biting the hand that feeds IT
