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Fix TDD URL #60

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Dec 15, 2023
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Fix TDD URL #60

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10 changes: 9 additions & 1 deletion english/week4.md
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Expand Up @@ -758,7 +758,15 @@ class User < ApplicationRecord
end
```

Make another test which will force you to make a real implementation [(see triangulation)](https://stanislaw.github.io/2016/01/25/notes-on-test-driven-development-by-example-by-kent-beck.html):
Make another test which will force you to make a real implementation [(see triangulation)](https://stanislaw.github.io/2016-01-25-notes-on-test-driven-development-by-example-by-kent-beck.html#triangulation):

> How do you most conservatively drive abstraction with tests? Abstract only when you have two or more examples. (p.153)
>
> If two receiving stations at a known distance from teach other can both measure the direction of a radio signal, then there is enough information to calculate the range and bearing of the signal. This calculation is called Triangulation.
>
> By analogy when we triangulate, we only generalize code when we have two examples or more... When the second example demands a more general solution, then and only then do we generalize (p.16).
>
> I only use Triangulation when I'm really, really unsure about the correct abstraction for the calculation. Otherwise I rely on either Obvious Implementation or Fake It. (p.154)

```ruby
it "is the one with highest rating if several rated" do
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