Our panel of 91 professional philosophers has responded to

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

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.