Quick report on a new video and podcast of me some of you might be interested in.
Video: a decent video of the second Carrier-Licona debate on the Resurrection of Jesus (more a conversation really, a completely different and in many ways more illuminating format than our formal debate on this same topic at UCLA years back) is available for free viewing online. This took place at Washburn
Bandwidth and utilization bottlenecks
Let us consider an end-to-end data transport path that can be decomposed into the following segments* end-to-end path = LAN + access network + core network + access network + LANThere may be distinct service providers for each of these segments, thus many different decompositions may make sense from the business perspective. Yet, the identity of the access network, and of its components * access
The access network equation
My last entry provoked several emails on the subject of the terms last/first mile vs. access networks. While answering these emails I found it useful to bring in an additional term – the backhaul network. Since these discussions took place elsewhere, I thought it would be best to summarize my explanation here.Everyone knows what a LAN is and what a core network is. Simply put, the access network
Last mile or first mile ?
Physical-layer access technologies with limited range are usually called last mile technologies. More specifically, we usually use the expression last mile when considering xDSL, that enables several Mbps to be transported over several kilometers, or a fiber optic link or PON, that enable hundreds or even thousands of Mbps to be transported over tens of kilometers.In the year 2000 the IEEE
How to Be a Philosopher
In Sense and Goodness without God I open with an impassioned plea that everyone be a philosopher, that they replace all the devotion and time they spend (or are told to spend) on religion, all to doing philosophy instead. To which I'm often asked "How?" Indeed, someone on FaceBook just asked me that the other day.
Someday (if I live long enough) I hope to write a book answering that question for
Someday (if I live long enough) I hope to write a book answering that question for
Agora Review
This is an update to a series of blogs I've run on the film Agora, about the murder of the scientist Hypatia in the 5th century A.D. (see Killings Hypatia and Weisz Is Hypatia). Until now I was responding to what other people said who saw it. But then I discovered Agora was playing at a theater in Berkeley, so Jen and I went to see it. I can now give it my own first-person review...
It was a
It was a
DNSSEC - Internet root signed
IP addresses (even 4-byte IPv4 ones), are generally not easy to remember, which is why humans prefer to type domain names into their browser address window, even if they are longer. It is job of the Domain Name System (DNS) to translate the domain name into the correct IP address, which is placed in the IP header and enables proper forwarding.The DNS works recursively in the following way. When
Killings Hypatia
A while ago I blogged about a coming film on Hypatia of Alexandria (Weisz Is Hypatia). I've heard reviews from people who've seen it (still hasn't come to where I am, and might never), and they've reassured me it isn't as loose with historical facts as it at first sounded. It does engage in fictional "what ifs" apparently, but that's fine.
One review of note is by a medievalist who posted at the
One review of note is by a medievalist who posted at the
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