"I think we could solve our problems more easily through strength of character; but that's always been a commodity in extremely short supply."
In the story, the tracer-birds are used to spy upon the novel's main character. It is noteworthy that Zelazny hit upon a useable way for UAVs (Unmanned aerial vehicles) to do solar charging automatically.
The earliest reference that I know of for a robot that can charge itself is from the 1960 short story Callahan and the Wheelies by Stephen Barr. See the article for the self-charging robot.
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Self-Driving Truck Corridor From Manitoba To Mexico?
Maybe this would be safer...
Electronic Tongue Knows Beer Better Than You
'Install taste buds in the end of one tentacle.'
NASA's Robotic Mining Competition
''Dave,'[Powell] said. 'You're a stable, rock-bottom mining robot...'
Should Humanity Switch To Robotic Pets?
'What about an exact electric duplicate of your cat?'
L'Oreal To 3D Print Human Skin
'...She helped the doctor spray on surrogate skin.'
LG Display Creates OLED Wallpaper
'A television that unrolled like a poster...'
Cool Foldable Mini-Quadcopter
'Eddie pocketed the bee cam...'
NASA's Subvocal Speech System
'She took a subvocal input device from its rack...'
Cicada UAV Dropped In Swarms
'We... dropped roughly a thousand eyes on Beta Hydri IV.'
AI's Now Being Taught Anger
Actually the Prime Radiant was just a display device.
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