Cipher seals

  1. 42
  2. 69
  3. 420
  4. 690

Quiet field

169

The year was full. This aperture was quiet.

Marcus Aurelius became sole emperor after the death of Lucius Verus. The plague that had entered the empire with the eastern wars was still killing. None of this resembles a lodestone, a map, or a table of elements.

  • Death of Lucius Verus
  • Marcus Aurelius sole emperor
  • Antonine Plague continuing
  • Marcomannic pressure on the Danube
  • Eastern Han court politics

The aperture

No event in 169 meets the instrument, publication, or conceptual threshold used for the later anchors. The year is retained so that absence is visible.

Regions checked

  • Europe
  • Middle East and North Africa
  • East Asia (Eastern Han)
  • South Asia
  • the Americas
  • Africa

Included / excluded

  • Excluded: Antonine Plague. Historically major, but it is a multi-year event that did not begin in 169 and does not meet the pattern categories except by forcing OTHER.
  • Excluded: Meditations of Marcus Aurelius. Written later, during the 170s campaigns. Dating them to 169 would be a miss.

68 | 69 | 70

Same century. Same research threshold. Matched frames. Neither pane brighter except that the middle year is the selected aperture.

168

Neighbor

Joint rule of Marcus and Verus continues. Danubian war. No independent first in the later cluster.

169

Aperture

No event in 169 meets the instrument, publication, or conceptual threshold used for the later anchors. The year is retained so that absence is visible.

170

Neighbor

Marcomannic wars intensify. Still a military imperial year.