Gail Rachlin was checking out a holistic health fair at a Manhattan hotel about seven years ago when she spotted a guy with a blissed-out grin standing at a booth.

• 七年前，盖尔拉其琳（女）在曼哈顿一个宾馆浏览全身治疗健康展示会时，她看见了一个咧着嘴笑着的男人站在一个摊位前。他显然不是要推销什么东西，这一点引起了盖尔的注意。