Open assessment as a collaborative social knowledge process. The strawmen depict the members of a society. The paper sheet depicts an assessment in Opasnet (Q = question, R = rationale, A = answer). Yellow arrows depict observation (here of an undesired event, a toxic liquid spill). Green arrows depict information flow (from members of society to an assessment in Opasnet, from the assessment to members of society, or directly between members of society). Blue arrow depicts knowledge-based action (correctly taking care of the spill).