There are some medical conditions which do create difficulties in this area. (home-ed.info)
While the Internet isn't completely to blame for creating difficulties for traditional dating, it is the reason that dating is changing. (bestdatingsite.biz)
Using these tests, scientists weren't able to accurately pinpoint what areas would be the safest or the most dangerous during an earthquake, creating difficulties when trying to mitigate earthquake damages. (sciencemag.org)