Getting the right seat

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In some classes I come a little early so that I get a seat in the last row.
In other classes I come a little early so that I get to sit in the first few rows.
(Yep, classes are just full.)
Well, I anyway end up coming to class a little early :-).
And the reason is simple, I want the 'freedom to choose'.
(Of course, I partially give up my freedom in arrival time in the bargain, but again that's 'my' choice in this trade-off.)