Until the student driver learns to tighten the feedback loop to smaller, quicker corrections, he cannot help but swerve down the highway hunting (in vain) for the center.

• 这种情况会一直延续下去，直到新手学会收紧整个反馈回路，让它作出更小、更快的反应，否则他一定会不由自主地（徒劳地）在寻找中线的过程中迂回曲折于高速路上。