However, there are always a few that prefer to skate too close to the edge, flap their wings, and create more of a market nuisance than anything else.

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The blades are vibrated from side to side, as well as up and down (edge fatigue and flap fatigue) for millions of cycles, simulating twenty years of activity in the real world.

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On the bottom edge is a trick flap that's both a micro-USB socket and a USB Type A plug depending on how it's positioned -- the micro-SIM slot is cleverly hidden behind it.

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The only other noticeable breaks from the flush metal housing are a curious division surrounding the side-mounted dedicated hardware keys (power, volume rocker and camera button) and a flimsy flap on the opposite edge that hides ports for micro-HDMI and micro-USB.

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Moments later, Goodwillie flashed in another tricky ball from the edge of the six-yard box that Smith managed to flap away.

BBC: David Goodwillie