Our panel of 91 professional philosophers has responded to

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

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.