Value of a really good book

[jdart]

By the way, I am looking at some of the games from Frank Quisinky's ongoing 20+5 tournament (http://talkchess.com/forum3/viewtopic.php?f=6&t=74283). He published a link to a file of short games (ended with mate). Quite a large number of these are due to opening disasters: either a bad opening fed to the engines, or a bad move very soon after the end of the book line. Just one example:

[pgn][Event "20 Minutes/Game + 5 Seconds/Move"]
[Site "fcp-tourney-2020, WASP-1"]
[Date "2020.06.28"]
[Round "1.35"]
[White "Schooner 2.2 SSE x64"]
[Black "Igel 2.5.0 BMI2 x64"]
[Result "1-0"]
[ECO "B88"]
[PlyCount "87"]
[EventDate "2020.??.??"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. Bc4 Nf6 7. Bb3 a6 8. f4
Qc7 9. Be3 b5 10. Qf3 Bb7 $2 (10... b4 $5) 11. f5 Ne5 12. Qf4 b4 13. Nce2 exf5
14. Ba4+ Kd8 15. Qxf5 Bxe4 16. Qg5 Kc8 17. O-O Qb7 18. c3 a5 19. cxb4 h6 20.
Qg3 axb4 21. Bb5 h5 22. h4 Kb8 23. a4 bxa3 24. bxa3 Nfg4 25. Bf4 Ra5 26. Rfb1
Bxb1 27. Rxb1 Kc8 28. Qe1 Ra7 29. Nc3 Ra5 30. Ne4 Ra7 31. Nf2 Qd5 32. Rc1+ Rc7
33. Rxc7+ Kxc7 34. Qa5+ Kb8 35. Nc6+ Nxc6 36. Qb6+ Kc8 37. Bxc6 Qf5 38. Ne4 Ne5
39. Nc5 Nf3+ 40. Kh1 Qb1+ 41. Qxb1 Ne5 42. Qb7+ Kd8 43. Bxe5 dxe5 44. Qd7# 1-0
[/pgn]

[Dann Corbit]

Books are (IMO) extrememly temporal.
You write a good book, which has clever lines.
The lines get played. People examine the wins/losses.
They will never be duped again.
But in the end, the books always move forward.
The bad lines are exposed and the good lines are exploited.
Just common sense