The same thing Tim Coleman stressed at his CT lecture last month, any kind of edge. Whether it be from light, a drop-off, or the tail-out of a rip.
I miss Flap too. He had a brain full of striper knowledge and really contributed substantial information to threads. Too bad he never did a book.
You can't take things for granted. A cheap folding chair lasts longer than a person. That's the biggest lesson of aging: how tenuous and fragile we are.
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