(Fraud examination)

The following surveillance log was taken during two fixed-point surveillances of an employee suspected of stealing cash from the company while making nightly bank deposits.

10:47 p.m. John Doe exits car carrying black deposit bag. Shuts car door and looks around him in every direction.

10:49 p.m. John approaches ATM, unzips deposit bag, and pulls out a white envelope. John places white envelope in coat pocket.

10:50 p.m. John deposits cash into ATM.

11:34 p.m. John enters bar and sits at table with white male. The two order drinks from waitress.

11:37 p.m. Waitress return with drinks and bill.

Questions

What is wrong with this surveillance log?

Why is it important to take detailed notes during surveillance and covert operations?