ANSWER:
A scientist can be skeptical and open to new ideas at the same time because a scientist does not believe in anything that is being told but listens to new ideas. 
Step-by-step explanation:
- A skeptical scientist will not believe the new idea till the idea has been proved to be right by experiments. 
- An open scientist listens to new ideas and takes the related information. This new idea is then researched upon. 
- When a new idea is proved to hold validity and is true, the scientist accepts the idea.