David M. Speaker:
Science Fiction Technology and Ideas
Invention/Technology Source Work (Publication Date)

Brain Rejuvenation
Erase unnecessary parts of memory to make room for new impressions.

The Message From Space (1930)

Planet City
A planet the surface of which is entirely covered over, forming one single city.

The Message From Space (1930)

Visual as well as audio communication.

The Message From Space (1930)

(Records 1 to 3 of 3)

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Trolling Tether Cable
( 10/2/2022)

Earth Normal
( 10/2/2022)

( 10/1/2022)

Metal Fish
( 9/20/2022)

Robot Introspection
( 9/19/2022)

Robot Cat
( 9/18/2022)

( 9/17/2022)

( 9/16/2022)

Electric Cat (Robot Cat)
( 9/15/2022)

Time Loop
( 9/15/2022)

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