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• Why should I use this Stepper when I can write all this stuff in the plain Elixir?
  ```
  defmodule PlainElixir do

  def fizzbuzz(number) do
  case { rem(number, 3), rem(number, 5) } do
  { 0, 0 } -> "fizzbuz"
  { 0, _ } -> "fizz"
  { _, 0 } -> "buzz"
  { _, _ } -> number
  end
  end

  def encode(list) when is_list(list), do: rle(list, [])

  defp rle([], result), do: Enum.reverse(result)
  defp rle([a | tail], [{a, n} | rest]), do: rle(tail, [{a, n + 1} | rest])
  defp rle([a | tail], [a | rest]), do: rle(tail, [{a, 2} | rest])
  defp rle([a | tail], result), do: rle(tail, [a | result])

  end
  ```

• at 38:00 Dave uses debug and then passes t to trace - how did he do that? I cannot find a reference to that way of debugging in Elixir manuals.

• Diet, Stepper, Trace, Execution history, Clone execution history... Great talk.

• A beautiful talk

• Oh, it's redux, but for Elixir.