tweets o' the day

• 08:39 RT @berkmancenter: More carrot, less stick! bit.ly/46OLDt Dave Rand's new paper on human cooperation: bit.ly/xQxGb
• 13:59 At the travel medicine clinic. Shots incoming. Only five tho
• 14:34 Vaccine slurry in my system: hep A, meningitis, polio, tdap and flu. Joy

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