es ▁will ▁come ▁to ▁domin ate ▁the ▁gene ▁pool . ▁ ▁Not ▁only ▁can ▁we ▁class ify ▁the ▁degree ▁of ▁insect ▁cam ou fl age ▁using ▁a ▁gradient , ▁we ▁can ▁also ▁study ▁all ▁aspects ▁of ▁the ▁surrounding ▁environment ▁as ▁grad ients . ▁For ▁instance , ▁a ▁ 1 ▁percent ▁cam ou fl age ▁may ▁not ▁be ▁distinguish able ▁from ▁no ▁cam ou fl age ▁under ▁bright ▁day light . ▁But ▁as ▁light ▁f ades ▁and ▁night ▁sets ▁in , ▁there ▁is ▁a ▁critical ▁moment ▁when ▁the ▁ 1 ▁percent ▁cam ou fl age ▁helps ▁an ▁insect ▁escape ▁detection ▁by ▁its ▁pred ator , ▁while ▁its ▁companion ▁with ▁no ▁cam ou fl age ▁is ▁e aten . ▁The ▁same ▁principle ▁can ▁be ▁applied ▁to ▁the ▁distance ▁between ▁pre y ▁and ▁pred ator , ▁to ▁the ▁angle ▁of ▁view , ▁to ▁the ▁skill ▁or ▁the ▁age ▁of ▁a ▁creature , ▁etc . ▁ ▁In ▁addition ▁to ▁demonstr ating ▁how ▁grad ual ▁changes ▁can ▁bring ▁about ▁features ▁as ▁complex ▁as ▁the ▁human ▁eye , ▁Daw kins ▁states ▁that ▁computer ▁simulation ▁work ▁by ▁Swedish ▁scient ists ▁Dan ▁Nil sson ▁and ▁Sus anne ▁Pel ger ▁( although ▁it ▁is ▁not ▁a ▁computer ▁simulation ▁but ▁simple ▁mathematical ▁model ) ▁shows ▁that ▁the ▁eye ▁could ▁have ▁evol ved ▁from ▁scratch ▁a ▁thousand ▁times ▁in ▁succession ▁in ▁any ▁animal ▁line age . ▁In ▁Daw kins ' ▁own ▁words , ▁" the ▁time ▁needed ▁for ▁the ▁evolution ▁of ▁the ▁eye ... ▁turned ▁out ▁to ▁be ▁too ▁short ▁for ▁ge olog ists