Our panel of 91 professional philosophers has responded to

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

ask a question

recent responses

all topics

info

⚲

Question of the Day

Hello! I'd like to ask about syllogisms. I have a particular problem when understanding this certain syllogism: Some girls are single. Some girls are sad. Therefore, some girls are single and sad. While I think it is valid, I cannot fully make an accurate explanation as to why it is. Hoping somebody could help me. Thanks!

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.