About Jeremy Lichtman

CEO of Lichtman Consulting. Formerly CTO of MIT Consulting. Serial entrepreneur, software and web developer.

Why some people are intensely fascinating

Image: Carlos Porto / FreeDigitalPhotos.net

I’ve had a number of conversations with people online in the past few weeks regarding the topic of why some people are so good at holding others attention online.

You already know the sort of people I’m talking about – they have tens or hundreds of thousands of follows on major social media sites, and people hang on their every word.

What we were discussing was the ability of people to grab our interest, not general influence (although in many cases these are one and the same people).

As I told somebody on Twitter, I think I have pieces of the answer. Not the whole answer, unfortunately. That would be worth its weight in various precious minerals. Continue reading

Meta-squared Materials

Newton's Apple - Flickr Creative Commons - Ann Kempster

If I’m right about the following thought experiment, this could have a huge impact on humanities technological advancement.

As usual, I have no way of knowing if the following is original. I’ve placed links to whatever I can find that’s relevant.

A metamaterial is a man-made material that has attributes that aren’t normally found in naturally occuring minerals. Some of these materials have made the headlines in recent years (think “real” invisibility cloaks). Harry Potter aside, they’re pretty useful in a wide variety of areas, including telecommunications.

Now for the thought experiment:

Picture a metamaterial that creates (at some focal point) the simulated effect of a different metamaterial. In other words, we’re simulating a metamaterial using a different one. I’m not sure what to call this. Maybe a meta-metamaterial. Or a meta^2 material.

Building something like this is probably going to be difficult, but I don’t think it is impossible (See edit #1 below).

Why this is useful is that potentially we could use this approach to simulate metamaterials that cannot currently be built.

At the moment, the state of the art appears to be metamaterials that resonate at optical or near-infrared frequencies. That’s on the order of magnitude of  Terahertz (or THz), or 10^11 Hz, or looking at it from the perspective of wavelength, 0.1 millimeters.

Using a meta^2 material, we might be able to simulate something that resonates instead at a wavelength that approaches the Planck length.

What I think – and I have no way of proving that I’m correct right now – is that such materials will give us the ability to directly manipulate the fundamental forces of the universe. I’m not the first person to think along these lines. See this article which quotes a paper on ARXIV.

Some examples of what could be possible if we can do this:

  • Use the Strong Nuclear Force to build SF-style force-fields. Or industrial drill-bits that make diamonds look as soft as talc.
  • Create resonance with gravitational forces. This could allow us to make artificial gravity, or gravity cancellation devices.
  • Create extended areas of negative energy density. If Alcubierre is right, that could mean FTL.
  • Obviates the need to develop nanotechnology. Why bother building something at nanometer scale, when you can simulate the effect with much less effort, and make it any size necessary?

Edit #1: To clarify (based on some readers comments): what we’re talking about is using either optical or EM interference from a metamaterial to form a waveguide that produces the effect of the second-order metamaterial. In other words, creating a waveguide that doesn’t have solid walls, and then working backwards to create a metamaterial that generates such a condition.

Edit #2: Another relevant link.

Edit #3: I found one paper (horrible translation from Russian) that appears to cover the math behind virtual waveguides. There’s also a lot of work that has been done on plasma-based waveguides (a step in the right direction – not using solids!) over the past decade.

Who wants to be a Trillionaire?

International Pile of Money - Flickr Creative Commons - epSos.de

One standard piece of advice given to startups is to pick an industry that will permit scale, so that it is at least feasible that somebody in that industry at some point in time could build a large company doing it.

I saw a video on Yahoo Finance a while back where somebody claimed that Apple will be the first trillion dollar company (barring a brief stint by Cisco during DotCom).

Obviously it is hard to tell right now whether that’s true or not, but an industry that can support a trillion dollar company sounds like a good place to start, doesn’t it?

We know that this is possible in consumer electronics then, but what other industries would make this feasible? The goal here is to list industries that are big enough to support large companies (possibly even trillion dollar ones), and yet are still at least somewhat feasible for startups (potentially requiring substantial – but not unfeasible – capital). Continue reading

Is social media displacing creativity?

This post originates out of a number of discussions I’ve had lately with people on Google Plus.

The underlying notion is that people have a limited amount of free time, and if they’re spending it using social media websites then that activity displaces other – potentially creative – activity. There’s already been a lot written on whether social media displaces actual friendships (answer is: maybe). Continue reading

WordPress comments on home page

I recently built a modified version of WordPress’s Twenty Eleven theme for a graphic designer on behalf of their customer.

One of the things that the customer wanted was to put the “comments” form onto the bottom of each post on the home page of the blog.

That turned out to be pretty easy to do. In the index.php file inside the template, just add the following line of code under the part that outputs the post content:

 <?php comments_template( '', true ); ?>

The problem, as we discovered, is that when users replied to comments, the new comments were all appearing under the first post on the page.

My initial guess – which turned out to be wrong – was that there was some kind of bug in WordPress which had recently been introduced.

I dug a little deeper and looked at the stock comment-template.php file that comes with WordPress. When it builds the “reply-to” links, it creates a relative link based on the current page (i.e. normally that would be the blog post page itself), and then also adds in some javascript which keeps the user on the page and defaults the comment form correctly.

The problem was that the javascript necessary wasn’t included into the current page.

The fix consisted of adding the following line into the top of the index.php file:

wp_enqueue_script( 'comment-reply' );

That still leaves a side issue – what happens if a user has javascript disabled?

The correct fix would be to include a comments-template file into the theme, including a fix that includes the post id (when necessary) in the link url. The side issue with that (not really a big deal, but anyhow) is that you would then need to modify any other code in the theme that calls the comments template, to ensure it is calling the new one in the theme instead.

i.e. search for:

<?php comments_template( '', true ); ?>

and replace with:

<?php comments_template( '/newcomments-template.php'', true ); ?>

Not a big deal, but annoying.

Ideally though, this is something that WordPress should fix in their default code and/or something that theme developers should include by default.