Our panel of 91 professional philosophers has responded to

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

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.