Our panel of 91 professional philosophers has responded to

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

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.