Serious Error in "Silman's Lessons in Strategy (1)"

In the first lesson, "Botvinnik-Sorokin, USSR 1931," of  the course module "Silman's Lessons in Strategy (1)", it is erroneously claimed that Sorokin resigned after 23. Re7. In fact, Sorokin played 23 ... Rd6, (which is obviously much more resilient then the suggested line 23 ... Rf6?!) and Botvinnik then played 24. Rc7, and later won by a completely different method.

Below is the actual full game:

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Nbd7 5. Bg5 Be7 6. e3 O-O 7. Bd3 c6 8. O-O a6 9. a4 dxc4 10. Bxc4 c5 11. dxc5 Bxc5 12. Qe2 h6 13. Bh4 Be7 14. Rfd1 Nh5 15. Bxe7 Qxe7 16. Rd2 Nb6 17. Rad1 Qc5 18. Ba2 Nf6 19. e4 e5 20. Qe3 Qxe3 21. fxe3 Bg4 22. a5 Nc8 23. Rc1 Bxf3 24. gxf3 Ne7 25. Nd5 Nc6 26. Nxf6 gxf6 27. Rd7 Rab8 28. Kf2 Nxa5 29. Rcc7 Rbc8 30. Rxf7 Rxc7 31. Rxc7 Kh8 32. Bd5 b5 33. b3 Rd8 34. Kg3 f5 35. Kh4 fxe4 36. fxe4 Rd6 37. Kh5 Rf6 38. h3 Rd6 39. h4 Rb6 40. Kg4 Rf6 41. Ra7 Rb6 42. Re7 Rd6 43. Rc7 Rf6 44. Ra7 Rb6 45. Rc7 Rf6 46. Kh5 Rd6 47. Bf7 Rf6 48. Bg6 Nxb3 49. Kxh6 Rf8 50. Rh7 Kg8 51. Rg7 Kh8 52. Bf7 Rxf7 53. Rxf7 Kg8 54. Kg6 Nd2 55. Rd7

I have also detected a few errors in Silman's Lessons in Strategy(1). In Petrosian-Najdorf, Bled 1961 (http://www.chess.com/chessmentor/view_lesson?id=2450), 4. Nc6 is a much stronger move than that played by Petrosian (4. Na5) but it is rejected as an alternative move. I just wished they put in more effort to examine all possible lines especially since one can easily analyze with computers. 

Also, in Fischer-Gadia, Mar del Plata 1960 (http://www.chess.com/chessmentor/view_lesson?id=2450), again Silman makes the mistake of declaring Fischer's 6th move, Rad1 as an inaccuracy when it is the most accurate move.

Silman's suggestion 6. Nd5 is a mistake since 6...Qd4! solves Black's problem.

Fischer's 6. Rad1 is designed to prevent this since(and not 6. Rfd1 which allows Qf2), and if Black continues with 6...Rc8 (to continue with Silman's suggested plan to put pressure on the c-file),

7. Nd5 and now if 7...Qd4,

White has the tactic 8. Nxf6 gxf6 9. Qg3+ to win the Black Queen. 

I just wish they really put in the right effort to prepare these lessons; there are glaring errors in these lessons. I feel cheated after paying for the premium membership.