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| web | Slate | 2019-10-14 | ||
| web | Stephen Buranyi | The Guardian | 2019-08-29 | |
| web | Cyrus Farivar | Ars Technica | 2018-12-09 | |
| web | LoveMoney | 2018-05-06 | ||
| web | James Estrin | New York Times | 2015-08-12 | |
| web | 2010-07-21 | |||
| web | Michael Marshall | New Scientist | 2009-07-07 |