It is still applicable today:
The first time people look at any ad they don’t even see it
The second time, they don’t notice it
The third time, they are aware that it is there
The fourth time, they have a fleeting sense that they’ve seen it somewhere before
The fifth time, they actually read the ad
The sixth time, they thumb their nose at it
The seventh time, they start to get a bit irritated by it
The eighth time the start to think “Here’s that confounded ad again”
The ninth time, they start to wonder if they may be missing out on something
The tenth time, they ask their friends and neighbours if they’ve tried it
The eleventh time they wonder how the company is paying for all these ads
The twelfth time, they start to think that it must be a good product
The thirteenth time they start to feel the product has value
The fourteenth time they start to remember wanting a product exactly like this for a long time
The fifteenth time, they start to yearn for it because they can’t afford to buy it
The sixteenth time they accept the fact that they will buy it sometime in the future
The seventeenth time they make a note to buy the product
The eighteenth time they curse their poverty for not allowing them to buy this terrific product
The nineteenth time, they count their money very carefully
The twentieth time prospects see the ad, they buy what is offered….