Historical clue formulations

• Not yet seen, say — 2026-03-07
• Untapped, as potential — 2024-09-24
• Unexpressed — 2023-04-23
• Like variables that are not directly observed — 2023-01-03
• Existing in hidden form — 2022-06-13
• Not yet manifest — 2021-12-31
• Unrealized — 2019-01-02
• Dormant — 2018-12-20
• Not yet apparent — 2018-08-31
• Hidden — 2016-12-23
• Undeveloped — 2014-02-16
• Not obvious — 2013-09-26
• Unexpressed — 2011-05-29
• Scarcely visible fingerprint — 2010-02-05
• As yet unactualized — 2009-12-06
• Present but not visible — 2008-09-01
• Present but not active — 2007-10-03
• Underlying — 2005-02-14
• Hidden — 2004-05-26
• Potential — 2001-11-25
• Not yet actualized — 1999-11-21
• Dormant — 1995-09-09