Reality: analog, digital, or information compression continuum?

The Foundational Questions Institute (FQXi) has a thought-provoking new essay challenge for seasoned physicists, cosmologists, and lay-persons to answer: “Is Reality is Digital or Analog?”

In one sense, analog and digital is not an either/or question but two points on a continuum. Analog and digital are different information compression algorithms, using frequency and amplitude as levers for modulating information onto electromagnetic spectrum. As analog has progressed to digital, so too could there be several subsequent phases of information compression algorithms that are denser than digital.

Along the electromagnetic spectrum (Figure 1), analog communication uses radio waves, analog and digital satellite communication uses microwave frequencies, and digital communication uses fiber optics in the visible spectrum. Next-gen terahertz communications systems are already under development.

Figure 1. Electromagnetic spectrum

Quantum computing modulates atoms with information. Eventually, maybe all atomic and energy quanta could be modulated with information (smart matter). In the farther future, modulating information onto the other three forces (strong, weak, and gravitational) could be explored, along with the modulation of dark energy and dark matter. Gadget of the future: dark energy multiplexer.

Figure 2. Harnessing gravity waves through muons despite their 1.56 microsecond half-lives?

Questions uplevel the web

A new internet trend has popped up – asking questions to friends and strangers. Questions are a light-weight means of bringing structure and context to social interaction.

Many people start off with a low level of engagement (e.g.; what is the best pizza place in your neighborhood?). Things can start scaling up (e.g.; how much does it cost for a family to live in London on average?) and become quite detailed (e.g.; can a publisher see the average CPC or eCPM of a particular ad or advertiser on AdSense?). More importantly, more complex thoughts, opinion, philosophy, and value systems are being elicited (e.g.; what is a good real-world example of the "prisoner's dilemma" in recent history?).

The question-asking trend began with Hunch asking users questions to draw a taste profile map for users. The current generation of the concept features sites like Quora and formspring where users ask each other questions. Users have profiles and friending/following capability, with their questions and answer activity appearing in a status feed. It is like a friend network with topic precision.

Metrics would be interesting, such as the level of semantic complexity of questions, the number of repeated questions (an indicator of what is on the collective mind), and the ratio of asked to answered questions.

Question networks could be the real start of the semantic web, the natural automated approach (akin to Google’s automated machine learning) for creating the next higher level of information density.