| In the past, we did our engineering through cross-breeding and lots of trial and error. |
| By trial and error, I moved toward achieving my goals, and you can do the same. |
| After almost a century of trial and error, weightlifters have proved that the six-meals-per-day plan works best for muscle building. |
| Until standards were firmly in place, child placers would stumble along with nothing to guide them but trial and error. |
| They had better success, after much trial and error, by using a one-step cocktail fixative. |
| One hundred trial and error searches were run with the starting order of taxa randomized for each run, both with and without the new codings. |
