The THOG Problem Solution
If the white diamond is a THOG, then the black circle is also a THOG.Why is this the case?
The white diamond is a THOG either because it is White (the defining colour) or because it is a diamond (the defining shape). If the former, then the defining shape for a THOG must be a circle. If the latter, then the defining colour for a THOG must be black. Since these are mutually exclusive in the definition of what constitutes a THOG (i.e. it can posses only ONE of the defining characteristics), only the black circle qualifies. Mmm. Time for a thog of coffee I believe!