Post 121: February 23rd, 2017

First order of business today was Algebra. I learned about Ellipses. An ellipse can be defined as the set of all points in a plane such that the distance from two fixed point is a constant. The two fixed points in an ellipse are called the foci of the ellipse.


Next up, Economics. I learned about applying an economic way of thinking. Here’s the economic way:

  1. State the problem or issue
  2. Determine the goals to be attained.
  3. Consider the main means of achieving those goals.
  4. Select the economic concepts needed to understand the problem, and use them to appraise alternatives.
  5. Decide which alternative leads to the attainment of most goals, or the most important goals.

Another good thing with economic thinking is cost-benefit analysis, which is pretty self explanatory.


Finally, Programming. I learned about compiled and interpreted languages. So, for a compiled language, the compiler will translate code directly into a language that the machine can understand, and then the machine runs that code.

In interpreted languages, a separate program looks at and executes the source code, translating it into a form that the machine can then understand well enough to turn it into “machine code.”

Interestingly enough, compiling and interpreting aren’t mutually exclusive, and can be implemented at the same time in some instances.

Author: Carl Hall

Brick and mortar school, cyber school, and now home school

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