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@contracthaxor Thinking with external representations: https://t.co/sNWTRoenD8
@contracthaxor Thinking with external representations: https://t.co/sNWTRoenD8
RT @ejames_c: Also relevant: https://t.co/8PAsR1nhCa
Also relevant: https://t.co/8PAsR1nhCa
RT @prasanna_says: .@swardley you'll like this..