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 Fell asleep soon after dinner, and woke up around 1. Got up to play FC, watch anime and watch football games. Became rather sleepy after breakfast so went to bed. Got up at noon to have lunch, then played piano for a while. Did a cycling exercise, then returned to my study room to refactor my codes, so it looked pretty similar to the program in Chapter 4 of SICP. Something (local variable related) was still missing, and I was not sure what I had implemented yesterday was lambda expression or not (maybe it's just sequence). Completed 7 pomodoreos today - one for learning and three each for exercise and work.