求翻译：Waht makes a person a scientist?Does he have ways or tools of learning that are different from those of others?TThe answer is no.It is not the tools a scientist uses but how he uses these tools that makes him a scientist.You will probabably ageree that knowing how to use a power saw is important to a carpenter.You will probably agree,too,that knowing how to investigate,how to discover information,is important to everyone.The scientist ,however ,goes one step further,he must be sure that he has a reasonable answer to his question and that his answer can be confirmed by other persons.是什么意思？

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