I can't imagine it would be equally distributed? Probably normal distribution applies over the span, most of the kernels would probably pop within say 20s of each other, and none in the beginning.
Unfiltered tap water is great, but we've got real fine tap water in Europe. When hiking I've drunken water directly from springs, no need to filter it.
A better question would be how could you write to a cd multiple times without first sandpaper down the microscopic holes to make THE CDs smooth again. I mean, HOW?!
Anki is the best language app I've yet encountered including non-foss alternatives, but I needed to watch their tutorial video to understand the ui. Also it is only a flip-card app, so you might want to complement it with something else.
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