“Without vitamin C,” Anthony writes, “we cannot produce collagen, an essential component of bones, cartilage, tendons and other connective tissues. Collagen binds our wounds, but that binding is replaced continually throughout our lives. Thus in advanced scurvy”—reached when the body has gone too long without vitamin C—“old wounds long thought healed will magically, painfully reappear.”
In a sense, there is no such thing as healing. From paper cuts to surgical scars, our bodies are catalogues of wounds: imperfectly locked doors quietly waiting, sooner or later, to spring back open.
A piece of milled plexiglass acting as a projecting lens; via the Computer Graphics and Geometry Lab at the École Polytechnique Fédérale de Lausanne
New milling techniques applied to glass and plexiglass panels could be used to “create windows that are also cryptic projectors, summoning ghostly images from sunlight.”
[Pauly and Bompas] hope that the technique will be used in architectural design, to create windows that mould sunlight and throw images or patterns onto walls or floors,” which, if timed, milled, and manipulated just right, could produce a slowly animated sequence of images being projected by an otherwise empty window during different times of day.
Imagine a circle that contains all of human knowledge.
By the time you finish elementary school, you know a little.
By the time you finish high school, you know a bit more.
With a bachelor's degree, you gain a specialty.
A master's degree deepens that specialty:
Reading research papers takes you to the edge of human knowledge.
Once you're at the boundary, you focus.
You push at the boundary for a few years.
Until one day, the boundary gives way.
And, that dent you've made is called a Ph.D..
Of course, the world looks different to you now.
So, don't forget the bigger picture.
Keep pushing.