Archiv der Kategorie: Video

Attack Scenario ≠ Threat

Anforderungen – Requirements, Bedrohung, English, How to, Security, Video,

The below video gives an example of what some people would call a threat model. For all I can tell the video leaves out some detail but is otherwise accurate. Why does it appear hilarious or silly rather than reasonable?

As a joke the video exploits a mismatch between the sensible, even verifiable analysis it presents and the ridiculous assumptions it implies. If this attack scenario manifested itself it would play out pretty much as presented. However, the implied very narrow and specific mode of operation – firing cannon rounds at computers – does not correspond with the behavior of any reasonably imaginable threat agent. Any agent with the capability to deploy main battle tanks is facing a wide range of possible uses and targets. Shooting individual personal computers remains not only far from being one of the more profitable applications of this capability, but guarantees a negative return. The cost is high and destruction of specific, low-value items promises rather limited gains. There are also much cheaper methods to effect any desired condition on the specific type of target, including its complete destruction.

While the attack scenario is accurate, it lacks, therefore, a corresponding threat that would produce actual attacks. Such a threat would exist, for example, if the assumed target were other main battle tanks rather than personal computers.

Bicycling Safely On The Road

By Design, English, Safety, So geht das, Video,

Vehicular cycling advocate, John Forrester, recently passed away. The video below illustrates his ideas. In a nutshell, as a cyclist you should take yourself seriously as a road user, confidently claim the same right to the road as anybody else, and behave mostly as you would driving a motor vehicle. I have only one nit to pick: the cyclists in the video seem rather shy when it comes to claiming space, they could take the middle of the lane more often.

According to my experience, Forrester’s ideas work very well although they may take some getting used to before one can really appreciate them. Against general inclusionist trends in western societies, modern-day cycling infrastructure advocates nevertheless reject his approach, arguing that roads – or rather, segregated bike paths – should be designed for cyclists instead. In a rhetorical sleight of hand they gain approval to the truism that infrastructure design influence the safety and happiness of cyclists only to switch the general notion of infrastructure for their narrow definition later.

Dense or fast traffic can feel scary, but the real danger often looms where we least expect it. A crossroads in the middle of nowhere can be dangerous due to the angle in which roads meet. This is an infrastructure issue to be fixed by redesigning the crossroads for better visibility and perceptibility. Being advocates for a particular design, segregationists rarely discuss bicycle-friendly road design – or design objectives and tradeoffs at all.

Vehicular cycling works better on some roads than it does on others. It works where other road users do not perceive cyclists as an obstacle, either because there is ample space to pass or traffic is running so slow that passing does not really make a difference.  Vehicular cycling becomes psychologically much harder for everyone when road design turns cyclists on the road into a seemingly unnecessary obstacle and therefore, a provocation. Durch designs with narrow lanes on the regular road and separate bike paths do a great job at that. Vehicular cycling would be virtually impossible here:

Luftbild einer Straße in Nuenen by Eindhoven
Discouragement by design (source: Google Maps)

This road design causes the very stress bike path advocates promise to relieve through segregation. Unless you give up and comply, that is. Any honest debate of cycling infrastructure should at least acknowledge that regular roads are infrastructure and segregation is not the only viable approach to infrastructure design for cycling. If someone tries to sell you bike paths while avoiding a more comprehensive discussion of infrastructure design for cyclists, just walk ride away.

 

 

Wearing Your Mask, Chernobyl-Style

Covid-19, English, How to, Safety, Video

More and more people are wearing masks as personal protective equipment to lower the risk of coronavirus infection. Together with the growing of lockdown hair and beards while hairdresser and barber shops remain closed, this trend poses a bit of a fashion challenge. How can you wear a mask and still look great? In case you need some inspiration, the Chernobyl liquidators in the following video demonstrate smart ways of wearing a mask around the smoldering ruins of a nuclear reactor.