Our panel of 91 professional philosophers has responded to

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

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.