Read Mr. Bailey's article with interest. He present a compelling argument for the confusion may have happened (or not) when the PF initiated the TOGA using the switch. But I didn't see where he explained why the PNF (apparently mistakenly) thought the aircraft had achieved the positive rate of climb necessary before retracting the landing gear, or why, even if it he thought it had, he didn't leave the gear down as Boeing recommends for a TOGA after a bounced landing.