DNA testing

I don't think I am going to post anything more about dna on the neighbors facebook page yet. I need to think about it for a while.

Here is the what I think at the moment.

1. the Ancestry DNA test is incredibly accurate as far as it goes.
a. I know of only 4 relatives of mine that have, for sure, taken this test: (1) my first cousin Fred Neighbors,  (2) my first cousin once removed, Lisa Dunham,  (3) Lisa's daughter, my first cousin twice removed, Rosalie and  Joyce Duncans husband, my fourth or fi cousin, Hugh Duncan. Hugh Duncan's great grandfather and my great grandfather were the same man: John Ledford Monroe Neighbors. The fact that this test was able to verify that information is absolutely amazing.
b. My test results, in fact, matched and  found all four relatives and precisely identified their relationship to me.

2. Why didn't the test show that Mark Neighbors (for example) is my cousin.
a. He hasn't taken the test, therefore his data is not in the computer and the test could not indicate that we were related.

3. Why didn't the test show my indian DNA.
a. Same reason as #2.
b. No indian relative of mine is in the data base.
c. There are only about 2 million people in ancestry's data base.
d. The population of earth is about 7 Billion people.
e. Ancestry's data base contains information on about (700000000 divided by 2000000 X100)                0.028% percent of the worlds population.
f. Finding that indian is harder than finding a needle in a haystack. In fact...that particular needle             is likely not even IN the haystack.