Gaining karma by learning about_true_and_false

* True stuff

[#54145833]
Gaining karma by learning about_true_and_false

* False stuff

[#54145833]
Gaining karma by learning about_true_and_false

* nil is false

[#54145833]
Gaining karma by learning about_true_and_false

* only nil and false are false; everything else
  is true

[#54145833]