Our panel of 91 professional philosophers has responded to

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

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.