The two phones each have their own merits — it comes down to personal need.
Tips
history
《管子·形势解》: wise rulers assign officials by "what they excel at, not what they are weak at" — for all things "each has its own long and short". The idiom packages that Warring-States management principle.
mistakes
长 here reads cháng ("strong point; excellence"), not zhǎng ("to grow"). Same character, two readings — context is the only cue.
