“Surprisingly, not only is déjà vu proving an interesting window on the peculiar ways that our memory works, it is also providing a few clues about how we tell the difference between what is real, imagined, dreamed and remembered – one of the true mysteries of consciousness.” via New Scientist
The takeaway message is that deja vu is composed of distinct but related elements — recognition, the sense of familiarity, the sense of the weirdness or bizarreness of the experience, and the recognition of its impossibility — each of which has its own circuitry and neurocognitive machinery.
“The human body does many things well, but swimming isn't one of them. We're embarrassingly inefficient in the water, able to convert just 3 or 4 percent of our energy into forward motion. (Even with swim fins, we're only 10 to 15 percent more efficient.) But a new, dolphin-inspired fin promises to fuel the biggest change in human-powered swimming in decades, putting beyond-Olympian speeds within reach of just about anyone.
Culminating decades of research, engineer and inventor Ted Ciamillo, an inventor and engineer in Athens, Ga., who made his name (and fortune) building high-performance bicycle brakes, created what he has dubbed the Lunocet, a 2.5-pound (1.1-kilogram) monofin made of carbon fiber and fiberglass that attaches to an aluminum foot plate at a precise 30-degree angle. With almost three times the surface area of conventional swim fins, the semiflexible Lunocet provides plenty of propulsion. The key to the 42-inch- (one-meter-) wide fin's speed: its shape and angle, both of which are modeled with scientific precision on a dolphin's tail.” via Scientific American.
“I'm exhausted and hopeless and vaguely hung over because Andrew, who has autism, also has evolved from sweet, dreamy boy to something like a golem: bitter, rampaging, full of rage. It happened no matter how fiercely I loved him or how many therapies I employed.” via Salon.