RECENT ARTICLES

Grounded physicists are exploring the use of online and virtual-reality conferencing, and AI-controlled experiments, to maintain social distancing. Post-pandemic, these positive innovations could make science more accessible and environmentally-friendly.

Untangling how the human perception of cause-and-effect might arise from quantum physics, may help us understand the limits and the potential of AI.

Physicists are using optogenetics techniques to make a rudimentary agent, from cellular components, which can convert measurements into actions using light.

Investigating how quantum memory storage could aid machine learning and how quantum interactions with the environment may have played a role in evolution.

A proposed quantum set-up that could predict your game-playing strategy resurrects Newcombâ€™s classic quiz show paradox.

FQXI ARTICLE

July 11, 2020

Comment on this Article

Please read the important Introduction that governs your participation in this community. Inappropriate language will not be tolerated and posts containing such language will be deleted. Otherwise, this is a free speech Forum and all are welcome!

function ValidatePostText_main () {
form = document.addPostForm_main;
var recaptcha = $("#g-recaptcha-response").val();
if (recaptcha === "") {
event.preventDefault();
alert("The reCaptcha Box below must be checked before you submit the form");
}
else if (form.postText_main.value == '') {
alert ("The post contains no text");
return false;
}
else {
return true;
}
}

**Your name:**
(optional)

Recent Comments

read all article comments

Please read the important Introduction that governs your participation in this community. Inappropriate language will not be tolerated and posts containing such language will be deleted. Otherwise, this is a free speech Forum and all are welcome!

Please enter the text of your post, then click the "Submit New Post" button below. You may also optionally add file attachments below before submitting your edits.

HTML tags are not permitted in posts, and will automatically be stripped out. Links to other web sites are permitted. For instructions on how to add links, please read the link help page.

You may use superscript (10

^{100}) and subscript (A_{2}) using [sup]...[/sup] and [sub]...[/sub] tags.You may use bold (

**important**) and italics (*emphasize*) using [b]...[/b] and [i]...[/i] tags.You may also include LateX equations into your post.

Insert LaTeX Equation
[hide]

LaTeX equations may be displayed in FQXi Forum posts by including them within [equation]...[/equation] tags. You may type your equation directly into your post, or use the LaTeX Equation Preview feature below to see how your equation will render (this is recommended).

For more help on LaTeX, please see the LaTeX Project Home Page.

LaTeX Equation Preview

preview equation

clear equation

insert equation into post at cursor

LaTeX equations may be displayed in FQXi Forum posts by including them within [equation]...[/equation] tags. You may type your equation directly into your post, or use the LaTeX Equation Preview feature below to see how your equation will render (this is recommended).

For more help on LaTeX, please see the LaTeX Project Home Page.

LaTeX Equation Preview

preview equation

clear equation

insert equation into post at cursor

Attachments
[hide]

You may optionally attach up to two documents to your post. To add an attachment, use the following feature to browse your computer and select the file to attach. The maximum file size for attachments is 1MB.

Once you're done adding file attachments, click the "Submit New Post" button to add your post.

You may optionally attach up to two documents to your post. To add an attachment, use the following feature to browse your computer and select the file to attach. The maximum file size for attachments is 1MB.

Once you're done adding file attachments, click the "Submit New Post" button to add your post.

GEORGINA PARRY wrote on August 8, 2009

Why your assumption that time should be quantised?

Time is a muddle of at least 3 different concepts.Historical time.The past, present,future concepts.Objective time, motion of the matter of the universe along a 4th dimension.Subjective time t, divisible into te and ti measured with clocks or internally within the 3 observable dimensions of space.

(There is also mathematical time that exists only as a term within mathematical formulae.)

Subjective time te gives a regular...

Why your assumption that time should be quantised?

Time is a muddle of at least 3 different concepts.Historical time.The past, present,future concepts.Objective time, motion of the matter of the universe along a 4th dimension.Subjective time t, divisible into te and ti measured with clocks or internally within the 3 observable dimensions of space.

(There is also mathematical time that exists only as a term within mathematical formulae.)

Subjective time te gives a regular...

GEORGINA PARRY wrote on March 4, 2009

I agree that more than one definition of time is essential. I would suggest a minimum of 3. Although 1 of my 3 namely subjective time could be sub divided into two.ti, which is internally generated subjective time, relying mental reckoning based on internal circadian rhythms and input of general external environmental clues, and te which is time measured with an external timing device of any kind.

Ekhart Blumschein wrote "I am claiming having found out that elapsed time in reality is of...

I agree that more than one definition of time is essential. I would suggest a minimum of 3. Although 1 of my 3 namely subjective time could be sub divided into two.ti, which is internally generated subjective time, relying mental reckoning based on internal circadian rhythms and input of general external environmental clues, and te which is time measured with an external timing device of any kind.

Ekhart Blumschein wrote "I am claiming having found out that elapsed time in reality is of...

ECKARD BLUMSCHEIN wrote on January 8, 2009

Already Lagrange wrote in 1757 in Theory des fonctions analytiques:

".. the principles of the differential calculus free from all considerations of the infinitely small or vanishing

quantities, or limits [etc.] reduced to the algebraic analysis of finite quantities."

Virtually all Wilhelminian mathematicians including Dedekind, G. Cantor, and Hilbert preferred to make this pragmatism a seemingly rigorous theory.

Therefore, the attempt by for instance Charles...

Already Lagrange wrote in 1757 in Theory des fonctions analytiques:

".. the principles of the differential calculus free from all considerations of the infinitely small or vanishing

quantities, or limits [etc.] reduced to the algebraic analysis of finite quantities."

Virtually all Wilhelminian mathematicians including Dedekind, G. Cantor, and Hilbert preferred to make this pragmatism a seemingly rigorous theory.

Therefore, the attempt by for instance Charles...

read all article comments