Jerry
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Wisdom
Enumerated Wisdom
Four Principles of Wikinomics
Sharing
The Commons
Planetary Commons
Outer Space
Astronomy
Celestial Navigation
Attachments
Celestial navigation
Parents
Astronomy
Navigational Skills
Skill Erosion (Skills We're Losing as Technology Takes Over)
Children
Clockwork Mapping
Octants (1699 instrument)
Once We Had the Technologies of Navigation and Seaworthy Ships, Warships Needed only Water and Provisions to Stay at Sea Independently
Sextants (1731)
US navy returns to celestial navigation amid fears of computer hack