"When you have 15, 16 and 17-year-old youngsters, they can make huge improvements. American 15-year-old Katie Ledecky knocked five seconds off her best time at the US trials to qualify for the 800m.
"Missy Franklin is a phenomenon at 17. On Monday, she got out of the water following a race and 10 minutes later went back in and won the 100m backstroke. These things do happen.
The big question is over the way Ye swam in the last 50m. That's what we're all finding a little bit difficult to take in. But Becky Adlington's last 50m of the 800m was also quicker than Lochte's so we have to be careful that we don't jump to ridiculous conclusions.
"I watched a lot of the Chinese girls train at Bath University. Every day for nearly two weeks, their work-rate was colossal. Ye is probably one that was targeted when Beijing got the 2008 Olympics and she's had the last 10 years to prepare for this event.
"If you work it out in percentage terms, Meilutyte actually made a bigger percentage improvement over the 100m than Ye has in the 400m."
"If we had an athlete from Great Britain who dropped three seconds we would say 'wow'. I took five seconds off my time in the 400m freestyle from the age of 15 to 16.
"We have to remember young swimmers can take off chunks of time others can't. We should wait. This is what I don't like in sport. When athletes are successful, people say it's because of drugs."
Adrian Moorhouse,1988年奥运会100仰泳冠军:
"First of all, Ye Shiwen is no overnight sensation as she won gold at the World Championships last year. I think it is sour grapes and insulting.
"Meilutyte has won a gold medal in the breaststroke and we're all captivated by that because she trains here in Britain, but nobody is questioning her.
"There are a lot of people in China and the base of their pyramid is so wide that if they train thousands and thousands of kids, they might just find their 'Michael Phelps'.
"At 17, I took four seconds off my best time in the 200m breaststroke and won a European bronze medal. At that age, you can make big leaps."