comments
Respond
Comment on the article
Add a citation
Reply with an article
Start a new topic
Edit
Edit article
Delete article
Share
Invite
Link
Embed
Social media
Avatar
View
Graph
Explorer
Focus
Down
Load 1 level
Load 2 levels
Load 3 levels
Load 4 levels
Load all levels
All
Dagre
Focus
Down
Load 1 level
Load 2 levels
Load 3 levels
Load 4 level
Load all levels
All
Tree
SpaceTree
Focus
Expanding
Load 1 level
Load 2 levels
Load 3 levels
Down
All
Down
Radial
Focus
Expanding
Load 1 level
Load 2 levels
Load 3 levels
Down
All
Down
Box
Focus
Expanding
Down
Up
All
Down
Article ✓
Outline
Document
Down
All
Page
Canvas
Time
Timeline
Calendar
Updates
Subscribe to updates
Get updates
Past 24 hours
Past week
Past month
Past year
Pause updates
Contact us
Wikipedia
RELATED ARTICLES
Explain
⌅
The Arrow of Time
The Arrow of Time ☜A map exploring some issues concerning the nature of time that lie at the boundary of physics and philosophy. The map follows up a talk to the Blackheath Philosophy Forum on 2 April 2011 by Huw Price, Professor of Philosophy and director of the Center for Time at Sydney University.☜F1CEB7
⌃
Protagonists
Protagonists☜A number of philosophers and scientists are cited in this map, and separate nodes for each are appended. When you click on one of these nodes cross-links are displayed connecting to other nodes anywhere in the map where the person is cited. Follow the links to explore further.☜D3B8AB
⌃
Others
Others☜☜D3B8AB
■
Wikipedia
Wikipedia☜☜D3B8AB
⇤
Real but agent-relative
Real but agent-relative☜The present for each observer is what each perceives directly, rather than remembers or anticipates. The present is written to the memory of an observer - added to the stock of past memories, following the preceding ones in temporal succession. The present is real but agent-relative.☜FFFACD
⇤
A 'just-so' story
A 'just-so' story☜To claim that tensed beliefs are an evolutionary adaption is an example of a just-so story: an unverifiable narrative account purporting to explain some observed phenomenon.☜FFFACD
⇤
Landauer's Principle
Landauer's Principle☜Any logically irreversible manipulation of information, such as the erasure of a bit or the merging of two computation paths, must be accompanied by a corresponding entropy increase in non-information bearing degrees of freedom of the information processing apparatus or its environment.☜FFFACD
⇤
The thermodynamic arrow
The thermodynamic arrow☜The Second Law of Thermodynamics implies an arrow of time in the sense that the entropy (or disorder) of an isolated system such as the whole universe never decreases - it either increases or remains constant.☜FFFACD
⇤
Loschmidt's paradox
Loschmidt's paradox☜In 1876 Loschmidt objected to the H-theorem on the ground that it should not be possible to deduce a time-irreversible process from time-symmetric dynamics. This was because for every path in a system that leads to an increase in entropy there is a reverse path that reduces it.☜FFFACD
⇤
Proof of the H-theorem
Proof of the H-theorem☜☜FFFACD
⇤
Maxwell's demon objection
Maxwell's demon objection☜Maxwells demon is a thought experiment that shows how the Second Law can be violated. Take a container divided into two parts containing gas, and imagine that the demon controls a gate between the two only allowing hot molecules to go into one compartment, leading to increased entropy.☜FFFACD
⇤
Need to take account of information
Need to take account of information☜The Second Law is not violated provided account is taken of the entropy of the whole system - including the energy expended by the demon in gathering the required information.☜FFFACD
⇤
Why low entropy in the past?
Why low entropy in the past?☜How do we account for the low entropy of the early universe reflected in the extreme - but not perfect - homogeneity of the distribution of matter and energy shortly after the Big Bang? When gravity is prominent - as in the early universe - a smooth distribution is unstable and of low entropy.☜FFFACD
⇤
Anthropic selection
Anthropic selection☜Several explanations have been offered that rely on (weak) anthropic selection to explain the low entropy past. They all note that conscious observers can only exist in an environment far from thermodynamic equilibrium, but differ on how the we came to be in such a state.☜FFFACD
⇤
Objections to Popper
Objections to Popper☜Many contemporary philosophers and scientists reject Poppers falsifiability test - see citation for some instances.☜FFFACD
□
Blue Brain Project web site
Blue Brain Project web site☜☜D3B8AB
□
Encyclopedia Brittanica
Encyclopedia Brittanica☜☜D3B8AB
□
John Horgan
John Horgan☜☜D3B8AB
□
Michael Slezak
Michael Slezak☜☜D3B8AB
□
Mike Perricone
Mike Perricone☜☜D3B8AB
□
Science News
Science News☜☜D3B8AB
□
Sydney University Physics Dept
Sydney University Physics Dept☜☜D3B8AB
□
Technoccult blog
Technoccult blog☜☜D3B8AB
□
Graph of this discussion
Graph of this discussion☜Click this to see the whole debate, excluding comments, in graphical form☜dcdcdc
Enter the title of your article
Enter a short (max 500 characters) summation of your article
Click the button to enter task scheduling information
Open
Enter the main body of your article
Prefer more work space? Try the
big editor
Enter task details
Message text
Select assignee(s)
Due date (click calendar)
RadDatePicker
RadDatePicker
Open the calendar popup.
Calendar
Title and navigation
Title and navigation
<<
<
July 2024
>
<<
July 2024
S
M
T
W
T
F
S
27
30
1
2
3
4
5
6
28
7
8
9
10
11
12
13
29
14
15
16
17
18
19
20
30
21
22
23
24
25
26
27
31
28
29
30
31
1
2
3
32
4
5
6
7
8
9
10
Reminder
No reminder
1 day before due
2 days before due
3 days before due
1 week before due
Ready to post
Copy to text
Enter
Cancel
Task assignment(s) have been emailed and cannot now be altered
Lock
Cancel
Save
Comment graphing options
Choose comments:
Comment only
Whole thread
All comments
Choose location:
To a new map
To this map
New map options
Select map ontology
Options
Standard (default) ontology
College debate ontology
Hypothesis ontology
Influence diagram ontology
Story ontology
Graph to private map
Cancel
Proceed
+Comments (
0
)
- Comments
Add a comment
Newest first
Oldest first
Show threads
+Citations (
0
)
- Citations
Add new citation
List by:
Citerank
Map
+About
- About
Entered by:-
Peter Baldwin
NodeID:
#115286
Node type:
Protagonist
Entry date (GMT):
8/12/2011 6:47:00 AM
Last edit date (GMT):
8/12/2011 6:47:00 AM
Show other editors
Incoming cross-relations:
0
Outgoing cross-relations:
11
Average rating:
0
by
0
users
Enter comment
Select article text to quote
Cancel
Enter
welcome text
First name
Last name
Email
Skip
Join
x
Select file to upload