But learning is overrated as something difficult to evolve. This may have to do with our chauvinistic attachment to learning as an exclusive mark of our species.
But the more they sell, the harder it is to convince customers that they are buying something "exclusive" : ie, something that hardly anyone else has.
但是他们卖的越多,就越难说服消费者他们买的东西是“独一无二”的,几乎没有其他人拥有。
3
The typical solution to a race condition is to ensure that your program has exclusive rights tosomething while it's manipulating it, such as a file, device, object, or variable.