QUESTION 1: What does rubbing or stroking your chin generally indicate?

QUESTION 2: What should you do if your interlocutor starts rubbing his or her chin during your proposal?

Because it shows weakness on the part of the salesperson
Because it interrupts the natural flow of the conversation
Because the principle of consistency makes it much more difficult to change the salesperson's mind
Because it is impolite to let the customer speak first

Accept defeat and politely walk away
Ask questions about what additional information you need or what generates doubts
Ignore the signal and continue talking about your product
Changing the subject radically to distract the customer