The units scientists use in their daily work are the SI units, and sometimes the equivalent cgs units. In these unit systems, everything is based upon the physical quantities length, mass, time (and some more). The part "physical" is only deserved if we mean something measurable by these "quantities". So, what does it mean to measure length, mass and time?

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Today in the series "How to do XYZ with software?":

How to manage time?

I have no idea. Well, at least I can tell you how I use computers to help me in managing my time. But beware: people tend to be(have) very different in self-management, and time-management is an essential part of self-management.

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