A trip down memory lane...
This afternoon Unit appeared deep in thought, scratching her chin and asked, "Did you ever ever learn how to count on an abacus in grade school?" I have no idea where that came from but,
Sure did. The abacus was the tool of choice to do simple adding and subtracting. The little beads slid on rods and sure enough, it would give you the answer.
And later on, a slide rule. It was said (don't now if it was true) that man went to the moon on calculations that were made on a slide rule.
And who drew perfect circles or just the right arc on paper with a compass? With a sharp pencil clamped into it.
This afternoon Unit appeared deep in thought, scratching her chin and asked, "Did you ever ever learn how to count on an abacus in grade school?" I have no idea where that came from but,
Sure did. The abacus was the tool of choice to do simple adding and subtracting. The little beads slid on rods and sure enough, it would give you the answer.
And later on, a slide rule. It was said (don't now if it was true) that man went to the moon on calculations that were made on a slide rule.
And who drew perfect circles or just the right arc on paper with a compass? With a sharp pencil clamped into it.
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