Effective Marketing means Targets many prospects at a time and Effective Selling means Targets a specific company or person? Is this correct?

Marketing Always Changes???

Most marketing techniques exploit human psychology but their delivery is a function of the available technology. Barnum and Bailey established trend-setting practices like sending promoters by train, in advance to future circus sites to pass out flyers, set up billboards and even foster rumors of the incredible shows that were coming to town. Radio and television dramatically influenced the delivery and content of marketing. Do you remember when fax machines were used as a means of connecting with prospects?