The relevant part:
Now here is a good lesson in bootstrapping. I did all of this before I had a product. When I asked if they would buy it, they said no. Better to find that out early on! I then asked companies why they said no, wrote their answers down, and moved on to the next phone call. This was an iterative process that took about 400 phone calls to complete, but when I was done I was able to hone in on an initial product. In just one month, which is how long it took me to make those 400 phone calls, I knew exactly what customers would buy. That is when I went and built the initial product which took just 45 days because I did not have to build a huge application, just the pieces that I knew customers wanted.
FYI- I wrote a customer development post about using AdWords to determine Market type:
Since these programs are only examples, community planners may wish to explore the additional programs and planning guides highlighted in Selected Resources and References . For more information on program materials and references, please consult Preventing Drug Use among Children and Adolescents: A Research-Based Guide for Parents, Educators, and Community Leaders, Second Edition (PDF, 688KB) . With NIDA’s continued support of research on effective prevention strategies, new research-based programs will continue to be made available in the future.
Increased educational resources are available to at least certain age groups and are now reaching larger numbers of children. The percentage of pre-adolescent athletes who have heard of steroids has increased significantly from 78% in 1989 to 88% in the current survey (p<.05). In 1989, only 50% of respondents had had steroid side effects explained to them. This significantly increased to 64% in the current study (p<.05). Currently, 60% of respondents felt that steroids, even if used carefully, would still harm the athlete compared to 56% in 1989 (p<.05). Furthermore, 65% currently consider steroid use a drug problem compared to 57% in 1989 (p<.05).