With the bad eye, two knobs, one above the other, disappear, and leave a dark gray blur.
Two knobs the size of Captain Kangaroo's buttons control the heat and the windshield wipers, which are slower than a stretching class on a senior citizens' cruise.
But the technology is hidden with the stylish understatement of the Tivoli Audio radio, which places sophisticated frequency-grabbing circuitry behind only two knobs and an old-fashioned case.
For enthusiast drivers, the luxury is found in two knobs on the center dash panel, just under the starter button, which let the driver choose normal, sport or track settings for the suspension and engine controls.
The analogue interface box also contains two knobs to adjust the sensitivity of the voltage (and hence keystroke pattern) by changing the amplification gain of the drive circuit.
The 820HD has two knobs and eight small buttons on the front face, and a large snooze/mute button on top, plus headphone and line-in jacks conveniently located on the left side.
The lens is extra-wide-angle to capture extra-full-bleed on the film (i.e. you can print the sprocket holes and numbering), and there are two knobs, for forward and backward film scrolling.
Designed to riff on the minimalistic beauty of old Blaupunkt Frankurt radio head units, Porsche's riff features two knobs, a half-dozen small buttons and a 3.5in touch-screen interface where a tuner dial would go.
By the end of the fourth week, the four incisors have fully emerged and about the same time, two knob-like structures, the hornbuds, appear on the head.
