Formerly, science was taught by the textbook method, while now the laboratory method is employed. »»»»» Formerly, science was taught by the textbook method; now it is taught by the laboratory method. The lefthand version gives the impression that the writer is undecided or timid, apparently unable or afraid to choose one form of expression and hold to it. The righthand version shows that the writer has at least made a choice and abided by it.
