Scientists must follow a path that is not scientifically predefined, and that requires decisions at every step. Whether they are right or wrong becomes clear in retrospect, which is why errors are unavoidable (though they should not be left uncorrected for long).
科学家必须探索出一条科学本身无法预知的道路，这需要每一步都做出正确的决策。对与错只有在事后回忆时才会变得清晰，也就是说犯错误是不可避免的（虽然不能长时间不改正错误）。科学意味着不断在好奇心和迷信、专业知识和创造力、偏见和开放、经验和顿悟、雄心和激情、傲慢和信念——简言之在已经过去的昨天和崭新的明天之间走钢丝。