If you have ever sat and stared at a screen absolutely puzzled by the behaviour of your code,model, simulator etc. you will appreciate the aptness of 34-1-76-62-56-107-6 Dawkins' observation in "The Blind 13-14-17-27-18-44-82-10-33-119"
1-2 3-4-5 6-7-8-'9 10-11-12-13 14-15-16-17-18-19-20-21 22-23-24-25-26
27-28-29-30-31-32-33-34-35, 36-37-38-39 40-41-42-43-44-45-46-47 48-49-50-51
52-53-54-55 56-57-58 59-60-61-62-63-64-65-66 67-68-69-70 71-72
73-74-75-76-77-78-79 80-81-82-83 84-85-86 87-88-89-90 91-92-93-94 95-96-97
98-99-100-101-102 103-104-105-106-107-108-109-110 111-112-113 114-115
116-117-118 119-120-121-122-123-124
which may be a sign that you need to at least tweak something, and at worst start over - but might also spark a new insight. This message, in any case, will come out clear if you follow this rule. The letters are numbered and can be converted to text by transcribing the author's name, the title of the book and solving the clues below.
1) Site for an opera or an operation (7): 9-53-58-22-26-105-54
2) Algorithm for solving LP problems (7): 35-63-59-106-89-110-74
3) The recent past (9): 3-65-66-67-93-47-71-60-16
4) Something to press or do up (6): 23-104-52-32-112-11
5) Saline or an answer (8): 121-85-123-113-91-19-24-102
6) Possible (8): 99-118-69-109-108-95-78-41
7) Wimbledon or the Six Nations (10): 97-28-31-40-115-75-42-43-64-39
8) Pay attention or adjust camera (5): 2-98-61-96-38
9) Trip (7): 36-12-86-57-8-120-111
10) Digit or drive (5): 116-117-122-94-45
11) Orchestral work (8): 103-55-29-30-68-7-20-79
12) Difficult to break, tear or chew (5): 87-72-37-21-81
13) Sum or oil major (5): 48-4-83-50-90
14) House or wash (5): 80-92-114-70-101
15) Ballet skirt (4): 124-5-77-25
16) After ninth (5): 51-73-15-100-49
17) Storm centre (3): 46-84-88
As usual, kudos and mentions on the Desk to successful solvers. [First in this year, Serge Mennecier, followed by Paul Tromans]