it was madam c.j. walker and it was in the early 1920's to 1930's i believe. She was one of the, if not the most, wealthiest black women of her time.
Learning by "trial and error method" was discovered by - THORNDIKE
The method that you can use to avoid this error would depend on the type of error and the type of programming language that you are using. You can use debugging to tool to avoid errors.
Error-Correcting Code or EEC
Error message on monitor
humans
Error
The store-and-forward switching method is the one that provides the most thorough error checking. When this method is used, erroneous frames are discarded.
Systematic error is the result of complete equilibrium. The method to reduce systematic error is to introduce a proof that demonstrates the group has error in their consensus.
There are many equations for which there is no method for obtaining an exact solution. In such circumstances, an efficient trial and error method may be the only way.
Method Acting. He created the fundamentals of it after much trial and error.
trial and error
-they use scientific method -they use trial and error method