Problem #PRU-34859

Problems Discrete Mathematics Set theory and logic Mathematical logic Mathematical logic (other)

Problem

During the election for the government of the planet of Liars and Truth-Tellers, \(12\) candidates each gave a short speech about themselves.
After everyone had spoken, one alien said: “So far, only one lie has been told today.”
Then another said: “And now two have been said so far.”
The third said: “And now three lies have been told so far,” and so on — until the twelfth alien said: “And now twelve lies have been told so far.”
It turned out that at least one candidate had correctly counted how many lies had been told before their own statement.

How many lies were said that day in total?