Our panel of 91 professional philosophers has responded to

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

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.