1.  
Making people laugh is tricky
A.   At times, the intended humour may
simply not come off.
B.   Making people laugh while trying to
sell them something is a tougher challenge, since the commercial can fall
flat on two grounds.
C.   There are many advertisements which
do amuse but do not even begin to set the cash registers ringing.
D.   Again, it is rarely sufficient for
an advertiser simply to amuse the target audience in order to reap the sales
benefit.
6.   There are indications that in
substituting the hard sell for more entertaining approach, some agencies have
rather thrown out the baby with the bath water.