The phrase "ink blots" refers to random patterns or shapes created by drops of ink on a surface, often used in psychology tests to understand a person's thoughts and feelings based on how they interpret the patterns. Full definition
Consider one of the earliest, the Rorschach ink blot test. (redeeminggod.com)
Some of the semi-formal projective tests include the Rorschach Ink Blot Test, Roberts Apperception Test, Thematic Apperception Test, and Children Thematic Apperception Test. (psy-ed.com)
The IPCC Report as Ink Blot Test — Oct. 2013 What do Greenpeace and the Natural History Museum have in common? (nofrakkingconsensus.com)