Our panel of 91 professional philosophers has responded to

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