11-12-13 Changing of the Guard

The phrase “changing of the guard” can be metaphorical but at the Prague Castle in the Czech Republic it is literal. But the event is also a tourist attraction. Deb and I just happened to be arriving at the Castle when the three men seen here were marching to their post. Their baby blue uniforms…

08-04-09 Flocking Behavior 02

Humans don’t flock, of course. They march or gather or group. And “drafting,” as mentioned in yesterday’s post, only occurs at relatively high speeds. Thus, the guys playing the flutes are only able to get by with less effort than those in front of them because they were smart enough to pick little instruments. Notice…