"i think it will be developed and i feel for the folks living near the development." it gives a wide range of frequency answer by using a evidently observed effect. smaller sections are sold reluctantly, leading to higher waste during the cutting process. i always see the best in people. (and i hope this is not at all original.) any information received is used only for order processing and shipping purposes. it also seems to last a lot longer than the manual says it should. there are no gimmicks in here; just a clear, simple approach to help you be happier for the long term. 