From Physical Possibility to Probability and Back

2021 ◽  
pp. 336-353
Author(s):  
Flavia Padovani
Keyword(s):  
Physical Possibility

Artificial Intelligent Algorithm to control Circuits Structuring of Flexible remote Experiments in Engineering within a Switching Matrix Architecture

2021 ◽  
Vol 9 (2) ◽  
pp. 92-102
Keyword(s):  
Switching System ◽  
Electronic Components ◽  
Intelligent Algorithm ◽  
Artificial Intelligent ◽  
Physical Possibility ◽  
Electronic Board ◽  
Switching Matrix ◽  
E Learning ◽  
Control Circuits

This paper presents the development of an artificial intelligent algorithm to control circuits structuring of flexible remote experiments in engineering fields of electronics and electricity within a switching matrix architecture. In addition, this paper presents a technical analyze and characterization of VISIR system to point itsadvantages and its inconveniences.The developedartificial intelligent algorithm controlsthe interconnections between electrical and electronic components and monitorsthe power supplying and measurements conducting onVISIR system.We also developed an electronic board to provide the physical possibility of connecting any component to any other component on VISIR’s switching system, and thereby manifesting a switching matrix architecture within VISIR. The developed switching matrix architecture and the developed algorithm enable to have flexible remote experiments in engineeringfields of electronics and electricitywhile havingresilient control on circuits structuring for e-learning purposes.Inaddition, they open the way to havemore circuit combinations of experiments by offering the possibility of connecting any component to any other componentwhile respecting the electrical limits of current and voltage.

Impossability Theory

Time Travel ◽  
2020 ◽  
pp. 128-144
Author(s):  
Nikk Effingham
Keyword(s):  
Time Travel ◽  
Metaphysical Possibility ◽  
Physical Possibility ◽  
Selection Of

My preferred solution to the Grandfather Paradox is to say that time travellers have the ability to do the metaphysically impossible (and so I can kill my grandfather), even though they never will. This requires physical possibility to outstrip metaphysical possibility. This chapter argues that, given the dialectic one must be in when considering the Grandfather Paradox, it’s reasonable to assume just that. It then argues that, given that assumption, impossability theory follows. The rest of the chapter explains Jack Spencer’s argument for the same conclusion, before discussing how impossability theory can be applied to a selection of paradoxes other than the Grandfather Paradox, and which have nothing to do with time travel.

Thought Experiments And The Epistemology Of Laws

1992 ◽  
Vol 22 (1) ◽  
pp. 15-44 ◽  
Author(s):  
Roy A. Sorensen
Keyword(s):  
Natural Selection ◽  
Thought Experiment ◽  
Laws Of Nature ◽  
Thought Experiments ◽  
Bad News ◽  
Good News ◽  
Evolutionary Account ◽  
Physical Possibility ◽  
Promising Source

The aim of this paper is to show how thought experiments help us learn about laws. After providing examples of this kind of nomic illumination in the first section, I canvass explanations of our modal knowledge and opt for an evolutionary account. The basic application is that the laws of nature have led us to develop rough and ready intuitions of physical possibility which are then exploited by thought experimenters to reveal some of the very laws responsible for those intuitions. The good news is that natural selection ensures a degree of reliability for the intuitions. The bad news is that the evolutionary account seems to limit the range of reliable thought experiment to highly practical and concrete contexts. In the fifth section, I provide reasons for thinking that we are not as slavishly limited as a pessimistic construal of natural selection suggests. Nevertheless, I promote the idea that biology is a promising source of predictions and diagnoses of thought experiment failures.

scholarly journals Time Travel and Time Machines

2011 ◽  
Author(s):  
Chris Smeenk ◽  
Christian Wüthrich
Keyword(s):  
Loop Quantum Gravity ◽  
Recent Literature ◽  
Time Travel ◽  
Quantum Theories ◽  
Physical Possibility ◽  
Quantum Behavior ◽  
Theories Of Gravity ◽  
Time Machines ◽  
Full Quantum ◽  
Rule Out

This chapter examines the logical, metaphysical, and physical possibility of time travel understood in the sense of the existence of closed worldlines that can be traced out by physical objects, arguing that none of the purported paradoxes rule out time travel on the grounds of either logic or metaphysics. More relevantly, modern space–time theories such as general relativity seem to permit models that feature closed worldlines. The chapter discusses what this apparent physical possibility of time travel means, and, furthermore, reviews the recent literature on so-called time machines, of devices that produce closed worldlines where none would have existed otherwise. Finally, it investigates what the implications of the quantum behavior of matter might be for the possibility of time travel, and explicates in what sense time travel might be possible according to leading contenders for full quantum theories of gravity such as string theory and loop quantum gravity.

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