Is this a place where this can be discussed?
See my PR for referance:
Here is a comment i added in the PR:
10 Reasons why Tau is better then Pi
Intuitive Circle Calculations: Tau, which is equal to 2π, simplifies calculations involving circles by providing a direct relationship between the circumference and the radius. This makes it easier to work with angles and radians in trigonometry and geometry.
Natural Trigonometric Values: Many important trigonometric values, such as sin(π/2) and cos(π/4), become simpler and more intuitive when expressed in terms of tau. It leads to more elegant and natural mathematical relationships.
Simplified Formulas: Numerous formulas in various branches of mathematics, such as calculus and Fourier analysis, become more concise and elegant when expressed using tau instead of pi. This simplification aids in understanding and applying mathematical concepts.
Visualizing Periodicity: Tau helps visualize periodic functions more intuitively. For instance, a complete rotation is expressed as τ radians, making it easier to grasp the symmetry and cyclical nature of trigonometric functions.
Elimination of Half Angles: Tau eliminates the need for half angles, which can often complicate calculations. By using tau, we can avoid working with complicated fractions and make calculations more straightforward.
Improved Notation: Tau simplifies notation by eliminating many cumbersome factors of 2π. This leads to cleaner and more elegant mathematical expressions, making it easier to communicate and understand mathematical concepts.
Consistency with Other Mathematical Constants: Several important mathematical constants, such as the Euler's number (e) and the golden ratio (φ), naturally align with tau rather than pi. Embracing tau provides a harmonious and consistent framework for various mathematical relationships.
Enhanced Teaching and Learning: Introducing tau in educational settings can simplify the understanding of trigonometry and other mathematical concepts. It enables students to build a more intuitive foundation, making mathematics more accessible and enjoyable.
Historical and Cultural Significance: The concept of tau predates pi and has historical and cultural significance in various civilizations. Embracing tau allows us to acknowledge and explore alternative mathematical perspectives and deepen our understanding of mathematical history.
Foster Mathematical Creativity: Tau opens up new avenues for exploration and creativity in mathematics. By challenging conventional thinking and encouraging alternative approaches, tau expands the possibilities for mathematical discovery and innovation.
You can make an argument that tau is in some sense "better", if you ignore the social context. But you can't ignore the social context: everyone knows what pi is, very few people know what tau is. Even if you'd personally find it more convenient to use Math.TAU instead of (at the cost of one additional character) Math.PI*2, your readers are much more likely to understand the latter.
If someday a majority of mathematicians have switched to using tau, so that people would actually know what it means, then we can revisit after that. Not before then.
What is the definition of a mathematician? I studied math and physics at university, does this count?