Our panel of 91 professional philosophers has responded to

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

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.