---
title: Improving units and notation
---
[The metric system is pretty good](metric.html), but
[not for the reasons usually given](metric_red_herring.html). SI is even better
[The minus sign should be avoided](minus.html):
- [Negatives are better written negative with a bar](negatives.html)
- [Subtraction should be avoided](subtraction.html), in favour of adding a
negative.
[Place-value](place_value.html)
[Vectors](projective_geometric_algebra.html)