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577 points simonw | 2 comments | | HN request time: 0s | source
1. jus3sixty ◴[] No.44724113[source]
I recently let go of my 2.5 year old vacuum. It was just collecting dust.
replies(1): >>44724274 #
2. falcor84 ◴[] No.44724274[source]
Thinking about it, the measure of whether a vacuum is being sufficiently used is probably that the circulation of dust within it over the last year is greater than the circulation of dust on its external boundary over that time period.