It’s the little things.
In July 2002, Appled filed a patent for a “Breathing Status LED Indicator” (No. US 6,658,577 B2). They described it as a “blinking effect of the sleep-mode indicator in accordance with the present invention mimics the rhythm of breathing which is psychologically appealing.
The average respiratory rate for adults is 12-20 breathes per minute, which is the rate that the sleep-indicator light fades in and out on most Apple laptops. Older models such as the Macintosh PowerBook, however, use a blinking LED indicator, with discrete pulses in one-second intervals. Pure design.
Making those late night image selections via the comforts of my bed, passing out and then waking up mid slumber…& the only visual is of the indicator and yourself in sync at that very moment. To evoke such feeling…Powerful.