Salesmen when using sales techniques are often aware that these techniques work well with some clients and not really well if not at all with others.

Sales techniques are clear, structured and logical. Lots of professionnal buyers like these efficient techniques, they think they are very professionnal. However, some buyers dislike these sales techniques and don't want salesmen to use them when dealing with them.

If a salesman knows the potential client 's color glasses and understand his energy, it can help him dealing with him.