There's nothing shameful about a mistake, but it's inefficient and costly when mistakes are incorporated into accepted science. Additional ideas and hypotheses that are based on the mistake are almost certain to be wrong, and the time and effort expended on developing them and testing them is lost. Far better to review, analyze, and attempt to replicate a new finding before accepting it. Scientists have developed myriad methods for review. Scientists are expected to present talks to their peers in seminars and meetings of all kinds.
Scientists tend to be pretty good listeners.
They like to learn about what's new even if it sometimes includes protracted periods of boredom. It's not all sunny and serene, however. I think every practicing scientist can recall when a question from the audience opened a huge hole in the speaker's logic or experimentation. Beyond oral presentations, scientists, to obtain attention for their results and to be successful, have to publish their findings. Scientific journals have varying standards for review of papers submitted for publication, and scientists know that the journals with the most rigorous review are also the most prestigious.