Training to improve finger strength, getting better at lock-offs, and even back-stepping (the single most useful technique in all of climbing!
增强指力，更有力的锁住支点，甚至是转身（唯一一个最有用的攀爬技巧！）
3
And while it's also important on a single-user system, there's nothing wrong with side-stepping the precaution and giving yourself permission to run or open the file in question.