trial and error

And while Beijing funds these developments centrally, in the US it is a messy but productive free market free for all, which means trial and error on an epic scale.

Although more research is needed, the findings suggest a future where choosing an antidepressant might no longer depend on trial and error.

Like anyone new to tradecraft, he learned by trial and error.

They are regular workers who have become uncommonly savvy with existing AI tools, often through trial and error.

The firm pleaded guilty to a health and safety breach and was sentenced at Teesside Crown Court, with the judge hearing dangerous work was being carried out by "trial and error".