How do you know?

I read an article today (a twitter from brainthunders - thanks Alysse!) that was an interview with a former member of the New Zealand All-Blacks (their National Rugby Team): http://www.nzherald.co.nz/rugby/news/article.cfm?c_id=80&objectid=10667235
In it, Leicester Rutledge talks about his history with Epilepsy while he was playing, and how he wouldn't know anything was happening since he lived alone. It wasn't until he started sleeping with his wife (his "mary," though I am not sure if that is her name, of course!) that she started noticing them so he knew exactly when they were happening.
His story resonated with me, but hearing him speak about his inability to come out and talk about his condition 30 years ago made me realize how far we have come.
But we still have a long way to go.