Eliezer once proposed an Idea for a book, The Simple Math of Everything. The basic idea is to compile articles on the basic mathematics of a wide variety of fields, but nothing too complicated.
Not Jacobean matrices for frequency-dependent gene selection; just Haldane's calculation of time to fixation. Not quantum physics; just the wave equation for sound in air. Not the maximum entropy solution using Lagrange Multipliers; just Bayes's Rule.
Now, writing a book is a pretty daunting task. Luckily brian_jaress had the idea of creating an index of links to already available online articles. XFrequentist pointed out that something like this has been done before over at Evolving Thoughts. This initially discourage me, but it eventually helped me refine what I thought the index should be. A key characteristic of Eliezer's idea is that it should be worthwhile for someone who doesn't know the material to read the entire index. Many of the links at evolving thoughts point to rather narrow topics that might not be very interesting to a generalist. Also there is just plain a ton of stuff to read over there - at least 100 articles.
So we should come up with some basic criteria for the articles. Here is what I suggest (let me know what you think):
- The index must be short: say 10 - 20 links. Or rather, the core of the index must be short. We can have longer lists of narrower and more in depth articles for people who want to get into more detail about, say, quantum physics or economic growth. But these should be separate from the main index.
- Each article must meet minimum requirements in terms of how interesting the topic is and how important it is. Remember, this is an index for the reader to gain a general understanding of many fields
- The article must include some math - at minimum, some basic algebra. Calculus is good as long as it significantly adds to the article. In fact, this should probably be the basic rule for all additions of complex math. Modularization also helps - i.e., if the relatively complicated math is in a clearly visible section that can be skipped without losing anything significant from the rest of the article, it should be ok.
- Baye's Rule
- Supply and Demand (probably with effects of price controls, incidence of tax, etc., and limitations)
- Economic Growth (Solow Growth model with limitations/implications)
If you do happen to come across something worth considering for the index, by all means, update the wiki. (a good place to start looking would be at Evolving Thoughts...) Perhaps we should add a section to the wiki for articles that we think are worth consideration so we can differentiate them from the main list. What thoughts do you have (about all of this)?
Ok, I have to be honest this entire idea makes me cringe, it seems a bit to much like a cheap get out of learning the math idea. Maybe I am biased because I actually am a mathematician but these kind of ideas I think are dangerous since you take away an important bar of admission to fields like physics. If you don't understand why the math is an important bar of admission look at the google groups physics group.
To be honest I think someone would be better off spending their time learning calculus at minimum then trying to read this kind of general overview. I think what is likely to happen is that either the math will be to simple and muddles the field to the point of being useless or its so complex that nobody can follow it. A good case and point you can understand quantum physics if you understand algebra but your going to be hopeless in a discussion about it without understanding things like the differential equations. Of course there are other fields which you have to know the math, from some of my own experience, fluid mechanics.
For my own part I think required math should include at minimum: Advanced Calculus (not that "calculus class" you took in high school it doesn't count) Differential Equations Linear Algebra Abstract Algebra Set Theory (basic at least) Number Theory
I think with these you probably can figure a lot of the more complex math out.
I am sure I am leaving a couple out but you get the idea.
While I also don't see the point in the enterprise, and think many of the specific suggestions misguided, you misinterpret its intent. Read the original post for an explanation. The point isn't to learn math "in a simple form", but to explain some of the most important facts about the world with at least a bit of mathematical rigor and expressive power.