"I look at the human life like an experiment. Every new moment, every new experience, tragic or otherwise, is an opportunity to gain a more accurate perspective and helps lead me to clarity."

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Thus we can get the correct answer for the probability of partial reflection by imagining (falsely) that all reflection comes from only the front and back surfaces. In this intuitively easy analysis, the 'front surface' and 'back surface' arrows are mathematical constructions that give us the right answer, whereas .... a more accurate representation of what is really going on: partial reflection is the scattering of light by electrons inside the glass.

— Richard P. Feynman