Historical clue formulations

• Conceptualize — 2024-10-25
• Brainstorm — 2023-10-18
• Think creatively — 2022-08-07
• Contribute to a brainstorming session — 2022-07-13
• Form thoughts — 2021-12-26
• Just think of something — 2020-12-05
• Use one's noodle, formally — 2019-11-02
• Imagine — 2018-12-13
• Dream up — 2018-10-16
• Think up — 2018-04-02
• Conceptualize — 2017-06-20
• Brainstorm — 2017-06-15
• Brainstorm — 2017-06-03
• Get creative — 2015-06-05
• Think up — 2015-02-25
• Do some brainstorming — 2015-01-12
• Philosophize, say — 2013-07-26
• Brainstorm — 2012-07-12
• Brainstorm — 2012-06-24
• Dream up — 2012-05-02
• Think creatively — 2011-11-08
• Cook up, so to speak — 2011-03-01
• Conceive — 2010-05-20
• Think up — 2009-10-28
• Brainstorm — 2009-09-15
• Think creatively — 2009-08-24
• Brainstorm — 2009-04-22
• Come up with something — 2008-11-01
• Think — 2006-11-19
• Put on one's thinking cap — 2003-12-29
• Cook up, so to speak — 2001-09-22
• Brainstorm — 2001-03-31
• Conceive — 2000-01-08
• Conceptualize — 1999-12-18
• Conceive — 1999-08-08
• Make plans, maybe — 1999-06-17
• Think creatively — 1998-10-26
• Conceive — 1998-10-11
• Come up with something — 1997-05-03
• Imagine — 1997-04-08
• Conceive — 1996-11-03
• Conceive — 1996-10-13
• Theorize — 1996-09-20
• Conceptualize — 1996-01-25
• Conceive — 1994-10-10