Our panel of 91 professional philosophers has responded to

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

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.