Our panel of 91 professional philosophers has responded to

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