Our panel of 91 professional philosophers has responded to

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

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.