06 February 2018

Drug Dealers, Rapists, Murderers...And Cyclists!

Donald Trump has labelled Mexican immigrants as drug dealers, rapists and murderers.

In my grandparents' generation, Italian immigrants were almost automatically seen as criminals and the Irish who came a generation earlier were viewed as drunken brawlers.  And Asians, particularly Japanese-Americans during World War II, were depicted as shifty and untrustworthy.

These days, when someone uses the word "thug", it's assumed that person is referring to a black male.  Likewise, "Arab" and "Muslim" are uttered interchangeably; both are used as synonyms for "terrorist."   

Now it seems that, at least in the meida, "cyclist" has become the new stereotype.  Whenever some drunk or distracted driver runs one of us down, we made the misguided choice of riding a bicycle--never mind that we were riding in a "protected" lane and the driver veered into it. But we are not, in those situations, labeled as "cyclists."

Instead, the c-word seems to refer only to those who are breaking the law--or, in one recent case, windows.

Now, I'll be the first to say that the pack who rode the wrong way on a Chelsea street--especially the member(s) who smashed the rear window of someone's new car and who smacked into a police officer--should be prosecuted.  The news reports I've seen and heard about it, however, seem designed to whip up as much hysteria as possible against anyone who pedals two wheels on this city's streets.  You can hear it in the way "reporters" (Where have journalistic standards gone?) elicit reactions from bystanders.  To hear them, cyclists are as much a menace to this city as MS-13 is to some immigrant communities.


To make a bad "report" even worse, the accompanying video, which purports to be a record of the rampage, actually has nothing to do with it.

05 February 2018

Will Robots Replace Riders?

Maybe I hang out with all the wrong people:  I have yet to meet anybody who likes the idea of a driverless car.  They may not enjoy driving, but they are skeptical that a computer program, or whatever would guide the vehicle, can make the same kinds of judgments a driver could make.

Then there are those people who enjoy driving.  I don't imagine many of them would be crazy about losing one of their pleasures.

So why, then, would anyone want to teach a computer how to ride a bicycle?

Computer scientist Matthew Cook, from what I can see, isn't trying to make a machine that can usurp the role of a cyclist.  Rather, he says, "we do not have great insight into how we ride a bicycle" no matter how well we may ride.

 

In 2004, when he was at the California Institute of Technology, he created a simulator and made 800 unsteered runs with it to see how far it could go when there is no one to steer it.   The image above shows the tracks of those runs, initiated when the "bicycle" was pushed to left to right, and how far they went before falling down.  Oscillations from side to side, visible in the chart, occurred because the bicycle was moving too slowly to keep itself stable.

As a result of this work, he found that it took a simple network of only two neurons to keep the bike stable:  one to calculate the required lean of the bicycle to execute a given judgment in direction, and another to translate that change into an amount of torque to apply to the handlebars.

Cook says his work could have "many applications", but doesn't specify what they are.  My guess is that it might be helpful for people to regain skills and faculties lost or impaired in crashes and other traumatic events:  Simulators like Cook's might, for example, provide insights into how our minds and bodies allow us to do some of the things--like balancing a bicycle or walking--we do instinctively. Also, I could see how "test dummies" for bikes could be developed to better test helmets and other products.

I just hope no one develops robots that can push us aside and take our bikes!  

04 February 2018

Watermelon Cooler?

In my youth, one of my riding partners was a bartender.  This got me to thinking about him:




I imagine that something like this would make him very popular with some cyclists!

For those of us who don't imbibe and ride, this might be for us:




"Watermelon wheels" sounds like an unflattering nickname for a slow or unskilled cyclist--or one you just don't like!