老师和学生都有过这样奇特的矛盾经历：一般来说，初学者往往对自己正在做的事情（的本质）想得太少，因为他们对自己正在做的事情（的细节）想得太多了。
Teachers and students alike have experienced the curious paradox that beginners, as a rule, tend to think too little about what they are doing because they think too much about what they are doing.
他说，资深学者往往不信任这些同事(大多数是年轻人)。
Seasoned academics tended to be incredulous towards these (mostly) younger colleagues, he says.
由于缺少可信的证据，对于语言的起源，以往的学者往往只能推测。
Lacking hard evidence, scholars of the past speculated broadly about the origin of language.
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