Which drawing fulfils the brief better?

You receive a randomly selected pair, with less-reviewed pairs prioritised. Each account can contribute once to a pair and up to 20 comparisons per experiment version. A tie counts as equal preference; “Cannot judge” does not affect preference results. Refreshing returns the same active comparison.

Community preference stays separate from expert rubric scores and native BIM checks. Sign-in and bot checks limit repeated submissions but cannot guarantee one account per person. The original drawings are publicly browsable, so determined visitors may recognise them.

We store a pseudonymous account identifier, sessions, assignments and votes. We do not store your Google email or name. Privacy and deletion information ↗