Our panel of 91 professional philosophers has responded to

23
 questions about 
History
75
 questions about 
Perception
24
 questions about 
Suicide
43
 questions about 
Color
81
 questions about 
Identity
34
 questions about 
Music
392
 questions about 
Religion
58
 questions about 
Punishment
124
 questions about 
Profession
221
 questions about 
Value
4
 questions about 
Economics
88
 questions about 
Physics
75
 questions about 
Beauty
96
 questions about 
Time
287
 questions about 
Language
1280
 questions about 
Ethics
39
 questions about 
Race
5
 questions about 
Euthanasia
170
 questions about 
Freedom
2
 questions about 
Culture
77
 questions about 
Emotion
80
 questions about 
Death
58
 questions about 
Abortion
31
 questions about 
Space
69
 questions about 
Business
284
 questions about 
Mind
154
 questions about 
Sex
244
 questions about 
Justice
218
 questions about 
Education
27
 questions about 
Gender
36
 questions about 
Literature
282
 questions about 
Knowledge
110
 questions about 
Biology
574
 questions about 
Philosophy
2
 questions about 
Action
32
 questions about 
Sport
89
 questions about 
Law
67
 questions about 
Feminism
117
 questions about 
Children
151
 questions about 
Existence
208
 questions about 
Science
105
 questions about 
Art
54
 questions about 
Medicine
51
 questions about 
War
134
 questions about 
Love
374
 questions about 
Logic
68
 questions about 
Happiness
110
 questions about 
Animals
70
 questions about 
Truth

Question of the Day

The syllogism in question is not valid. Nothing logically guarantees that the set of single girls and the set of sad girls overlap. Even if both sets have members, it does not follow that they have any members in common. Compare: Some polygons are squares. Some polygons are triangles. But it is false that some polygons are square triangles.