How to resume after clock starts during throw-in that is untouched.

[BillyMac]

Originally Posted by Indianaref

Basketball Rules Interpretations - 2009-10
SITUATION 11: Team B scores a goal to take the lead by one point. A1 immediately requests and is granted a timeout with three seconds remaining in the fourth quarter. Following the time-out, Team A is awarded the ball for a throw-in from anywhere along the end line. A1 passes the ball to A2, who is also outside the boundary; A2 passes the ball to A1 who is inbounds and running the length of the court. The timer mistakenly starts the clock when A2 touches A1’s pass while standing outside the boundary. An official notices the clock starting on A2’s touch (c), as soon as A1 catches the throw-in pass. RULING: This is an obvious timing mistake and may be corrected. In (c), the official may put the correct time on the clock, but must make some allowance for the touching by A1 – likely 10ths of a second, if displayed. The ball is put in play nearest to where it was located when the stoppage occurred to correct the timing mistake. A “do over” is not permitted in (c), since the throw-in had ended. (4-36; 5-10-1)

I believe that this may be the only interpretation where officials are allowed to change the game clock without any type of "definite knowledge" (definite knowledge, a visual, or non-visual count).

Estimation is not "definite knowledge".