Navigating by trial and error may get you there eventually, but using a map is faster.
Learning to crawl involves gradual trial-and-error attempts.
Hand-eye coordination begins to develop between the ages of two and four months, inaugurating a period of trial-and-error practice at sighting objects and grabbing at them.
Being a parent to a child of any age often involves nurturing by trial and error.
A lot of times, women have to go through trial and error to find a makeup brand that works for them.
It can be a trial-and-error process as what works for someone else may not work for you and vice-versa.