Yes, people often change their plans. There are many unpredictable factors like the weather or health issues that can force a change. Work or school commitments can also pop up unexpectedly, requiring people to adjust their schedules. Plus, with technology, it's easier than ever to reschedule or rearrange plans. Sometimes, people change their plans to accommodate others, like attending a social event or accepting an invitation.

No, not everyone changes their plans often. Some people prefer to stick to a routine because it provides a sense of stability and predictability. Changing plans can be stressful or inconvenient for them. Additionally, commitments and responsibilities, like work or family obligations, may prevent them from making changes. They value reliability and consistency in their schedules, which helps them manage their time effectively.