1.Living in the trailer is not a diagnosis.
2.Being rich is not diagnosis.
3.Background history is a diagnosis.
You making assumption about #1 and #2 without applying #3. Very wrong.
I do not care where anybody lives, but I will apply #3, first thing to do.
Then I look at the modern technology forensic facts. White male DNA in three places on the body: fingernails, on the outer pants, on the inner pants mixed with JB`s blood. Right in the blood spot. Not half inch right or left of the blood spot, but right in the blood.
Trailer or mansion. Unidentified DNA.
Are you serious that you do not believe in modern forensic technology ? WE do.
I certainly believe in modern forensic technology. But what I don't believe in is saying that DNA of UNKNOWN origin and that could have gotten on her clothing in a way that had nothing to do with the crime cannot be taken as evidence (and certainly not proof) of an intruder. Semen, blood, saliva are all much less easily transferred incidentally. Skin cells via Touch DNA CAN easily be transferred incidentally. That TDNA must be sourced to a named donor before it can begin to be associated with this crime.
IF that DNA had been semen, blood- it had no business being there. But skin cells can and do come from anywhere. We all have someone else's skin cells on us right now. Including people we have never met or had contact with. The cells were transferred to our hands (most likely venue) when we touched something that person had also touched.
Not every male at that party was tested for a match. Some were children at the time. They all used the same bathroom, touched the same door handles, and may have held their parents' hands (who in turn may have shook hands with someone, thereby getting the skin cells on them).
I also believe the blood spot oozed out postmortem and whoever put those panties and longjohns on her never knew it was there. Also, the ONLY reason why the skin cells were found at all is because the blood spot was tested to see whose blood it was. There may very well have been skin cell DNA on other areas of the panties. Its location under the blood spot does not make it more significant.
As for the DNA under her nails- long determined to be degraded and long said that NO useful DNA was obtained from them. NONE of the fingernail DNA would ever be admissible in court.