Our panel of 91 professional philosophers has responded to

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

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.