Such are the questions left to the experts at Caltech, which have just concocted a new device that can focus light to a point just a few nanometers wide.
The loss of England fly-half Wilkinson to a rib injury early in the second half, with Toulon leading 13-6 at that point, was a turning point as the French team lost their guiding light.
Previous on-chip nanofocusing devices were only able to focus light into a narrow line, making them inefficient, whereas Caltech's contraption can be focused in three dimensions, producing a point a few nanometers across, and using half of the light that's sent through.
In a conventional optical system, light rays enter through a lens and converge at a point to form an image.
Now, perhaps, the memory of his life can serve as a light for others, as a point of reference on our horizons.
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It's worth noting at this point that the navigation buttons are a little light under your finger, and the fatter-thumbed can find themselves choosing the wrong option, like a last-second golf putting twitch.
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At one point powering the light display by pedalling a bicycle - you're completely immersed in the story.
Now that Dr van Paradijs's team, and another led by Kailash Sahu at the Space Telescope Science Institute in Baltimore, have had time to look properly at the fading point of light, they have noticed a faint fuzz around it that looks as if it could be a galaxy playing host to a dramatic explosion.
Light passing through each microlens focuses at a point a few tenths of a millimetre beyond it, and thereafter spreads out as a cone.
Jelle Van Damme was dismissed in the 82nd minute, but the hosts made light of their man disadvantage and nicked a point through Legear four minutes from time.
This is a fascinating point to understand about human behavior, and it sheds light on the actions of investors who ride the markets to the bottom.
The departure of McKenzie, taken by Mehrab Hossain jnr at backward point, proved to be the only glimmer of light on a disappointing day for Bangladesh.
Though Madoff was little known to the public before his fraud came to light, Wilpon and Katz point out that he was a respected figure in the securities industry.
The size of a fund, and the point when it needed to mature, could be gauged in the light of predicted illnesses.
At that point, the imprisoned moon lost what little light it had left: it became a black, shapeless rock.
So I'm wondering, in light of that, what evidence you can point to that there isn't a rising tide of anti-American sentiment in Syria, and that indeed, to use Kristen's words, that whatever the President did yesterday in terms of recognition is too little, too late.
However, because the light from any planet orbiting a star at which the lens is aimed directly is arriving from a point slightly to the side of that star, it is able to shine through essentially unaltered.
Material for each color is deposited on the substrate through a fine metal mask, with one mask used for each color so that colors line up in a precise, very close pattern that, to the human eye, appears to create one pixel, or point of light.
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