I discovered about 150 dots ...

I discovered about 150 dots is the minimum number of dots to make a specific recognizable person. You can make something that looks like a head, with fewer dots, but you won't be able to give much information about who it is.
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Quotes from the same author

Of all the artists who emerged in the '80s, I think perhaps Cindy Sherman is the most important.
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I'm very learning-disabled, and I think it drove me to what I'm doing.
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Those who are waiting for an epiphany to strike may wait forever. The artist simply goes to work, making art, both good and not so good.
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Losing my father at a tender age was extremely important in being able to accept what happened to me later when I became a quadriplegic.
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In the 7th grade, I made a 20-foot long mural of the Lewis and Clark Trail while we were studying that in history because I knew I wasn't going to be able to spit back the names and the dates and all that stuff on a test.
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