Our panel of 91 professional philosophers has responded to

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

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.