The time to say some people proposed to decide in advance whether they will need to be bored in what the speaker is going to say, and they will use this as an excuse for prejudice, not to listen to people say.
Speaking at a presentation. Some people decide in advance that they would be bored of what the speaker is saying. And they will use this as an excuse for prejudice, not to listen to the speaker.
Time with speech presented. Some will decide in advance that they will be tired of what the speaker is going to say. And they will use this bias as an excuse to not listen to the speaker.