In an earlier post I mentioned the method of discussing in which people undertake the discipline of stating the position of their adversary in a way that is recognised by both as accurate.

It strikes me that that would be an excellent exercise here.
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It needs to be appreciated that the only people who can be pretty certain of being safe from getting HIV are celibates, people in exclusively monogamous relationships (straght or gay) with partners who were HIV free at the time this commenced , and lesbians.

Testing, screening, and, in the case of anyone with HIV, history tracing, makes sense for anyone not falling into one of those categories. Does anyone actually disagree with that?
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And please everyone, the basis for this thread is respectful boundaries, and that seems to have been generally accepted as ground rules for the drifted discussions. It's very easy to start up another thread where involving a lot less self control.