It seems to me like a missed oportunity. I assumed that when the world upgraded their tvs to hi-definition, they'd use the oportunity to create 1 standard for the world. i.e. 720p60, 1080i 60 and 1080p60. If we're all going to have to buy new sets for hi-def, and USA/JAP already have high def at 60fps, it makes sense to use that as a standard. Hi-def UK tvs will probably run at both 50 and 60 hz so older tv shows could still be brodcast at 50hz. Newer shows filmed in hi-def would be 60p from the start. In this way. all hi-def shows would be compatible worldwide. Why then will we have 2 seperate hi-def systems, 50hz in the UK, 60hz Jap/USA? Makes no sense to me. Also, why can't modern tvs run at the correct 24p/48p for films? or 78p/92p even for a more stable picture?