'Evolution' is from environmental thrust. 'Trial and Error' is subjective . If we look upon the process of evolution through a saga of expression of that very CONSCIOUSNESS (CHIT/CHAITANTYA) from single cell through nonvertibrate to vertebrate, jawless to single jaw, double jaws, with teeth upto mankind ,will find a Trial and Error of SAT CHIT ANANDAM(God) . A kind of dissatisfaction pushes to such a path which is still continuing.from smaller self to the expression of Bigger Self.Mankind is the stage where we differ in broader intellect and for that we reign over all species. Among them with the Highest EQ[not IQ], we get the touch of the God.
To become THAT[GOD] is our aim of this journey of life. And rebirth will continue till this goal is achieved. THIS IS SANATAN CONCEPT.
So this EFFORTS of our inner self is nothing but TRIAL AND ERROR. THIS IS LILA.
If we everybody and everything achieve that level in a Single day , GOD would present here from the beginning with this Highest level, then there is no question of Lila//HIS-HER WILL.
Do you know UTKRAMANAM?
UTKRAMAN /UP LIFTING OCCURS GRADUALLY. how?Sanoi Sanoi /Slowly and slowly.
Pitwa pitwa /imbibing n imbibing , potita cho Mohi tole/you fall on the ground
Utthayacho /Again get up , punar pitwa/ imbibe again. Thus, Punar Janma no voboti /you will attain MUKTI/Enlightenment.