by trial and error


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Synonyms for by trial and error

in an empirical manner

References in periodicals archive ?
For most of the history of rubber as an engineering material, its applications have largely been developed by trial and error. Prototypes are made for testing, results of which are used to alter designs, as modified prototypes are further tested until acceptable products emerge.
It was unrealistic to attempt this by trial and error. We would have had to make a small change to the tool, set it in the press, run a few samples to see the effect, then repeat the process until we got it right.
would have been to create a series of new prototypes by trial and error, in hopes of solving the problem.