Many Crop Circles (but also many cases of flattened (damaged, weakened) crop) probably created by double exposure – the first discharge plants only "prepares", creates "sensitive layer" of weakened plants, which are much more sensitive to any mechanical and physical stimuli, and to them records the next discharge yet, which occurs after a few weeks or months.
Wengi wa mazao duru (lakini pia na matukio mengi ya flattened mazao (kuharibiwa, dhaifu)) pengine umba na mfiduo mara mbili - kwanza kutokwa mimea tu "huandaa" Feed "nyeti safu" ya mimea dhaifu, ambayo ni nyeti zaidi kwa yoyote mitambo na kimwili uchochezi, na ni kumbukumbu ijayo Them kutekeleza bado, Ambayo Hupatikana baada ya wiki chache au miezi michache.