Marc Steinmetz has a gallery of improvised escape tools used by prison inmates. From the classic bed sheet and tea towel rope, as used in a 1998 bid to escape Hamburg’s ‘Santa Fu’ jail, to more adventurous construction projects, such as radio transmitters, pistols and this shotgun made from bedposts.

The collection also features tools for the making of moonshine and toast. 

I began my work at a time when invisibility was not fashionable at all.

Physicist Ulf Leonhardt, quoted here, in a piece noting how research into cloaking technologies has become popular and very nearly respectable. Needless to say, there are still one or two problems.

It’s difficult to find anybody in the know who expects there will ever be a device that hides itself and its contents at all wavelengths – if you can’t see it in visible light, then perhaps radar, infrared, ultraviolet or X-rays would reveal it. But optimism for practical uses is growing.

And there’s an issue I don’t recall being acknowledged in Star Trek. 

If a cloak were to make an object fully invisible to the outside world, then the outside world would be invisible to the object within the cloak. A thing (or person) inside a perfect cloak is not only invisible. It is blind.

Heather Mac Donald on racial quotas in school discipline. 

Schools that suspend or expel Hispanic and black students at higher rates than white students will now get a visit from a district “Equity Team” and will be expected to remedy those disparities by reducing their minority discipline rates. […] Tucson’s administrators explain their disciplinary quota pressure on the ground that students removed from class lose valuable learning time, exacerbating the already great ethnic academic achievement gap. Such thinking ignores the students who are not disrupting class or threatening teachers and who also lose valuable learning time when unruly or violent students remain in the classroom. Surely those students have a greater claim to “equity” in school resources than gang members do.

Clayton E Cramer on guns, flies and garbage.

Does anyone seriously believe that buying a gun attracts criminal attackers? Or do people buy guns because they perceive that they are in danger of being attacked? […] Many years ago, I was quite amused by one of the few really clever and thoughtful bumper stickers that I have ever seen. It managed to teach this problem of the direction of causality in a simple phrase: “Guns cause crime the way flies cause garbage.” The presence of garbage attracts flies; high crime rates cause decent people to buy guns. Prohibiting guns will no more prevent crime than spraying for flies will make your garbage disappear.

And on the subject of guns, here’s something to think about. 

To promote their literary works at the Frankfurt Book Fair, publishing company Eichborn deployed 200 flies, each attached temporarily to an ultra-light banner.

The banners, measuring just a few centimetres across, seem to be causing the beleaguered flies a bit of piloting trouble. The weight keeps the flies at a lower altitude and forces them to rest more often, which is a stroke of genius on the part of the marketing creatives: the flies end up at about eye level, and whenever a fly is forced to land and recover, the banner is clearly visible.

The results can be seen below.

Hm. A partial success, I think you’ll agree, but promising. Maybe if the project was scaled up dramatically. Say, with 100 million flies. Or maybe just one enormous mutant mega-fly, rumbling through the skies and casting its shadow across entire city blocks.

You’ll be wanting one of these. 

Also, the hummingbird helmet. Via Coudal.