"What ifs" do not lead to the truth.  God said, "And the LORD God commanded the man, saying, Of every tree of the garden thou mayest freely eat: But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die.
God said all the trees are good to eat from, freely...just as God, on the sixth Day,  "saw every thing that he had made, and, behold, it was very good."  To eat the fruit of the tree without taking thought (which is to consider/reason/desire the fruit as being good or evil; is desired because it might add to one's stature;bring some kind of gain/increase or even that it will take away or diminish in some way) is to keep the command.
Just as the woman at the tree in the garden reasoned...desiring something more (perceiving lack), considering the fruit has something more to offer by knowledge...that what she already possessed within was not enough and needed (desired/lusted after) more, then she ate. When the truth be, no thought needed to be taken, just pick up and eat the fruit.  It just is good because God said it was so...nothing added to or taken away from...just is good.
Man perceives/thinks good and evil...something will add to his stature or take away from it (...when the truth be, no man can add to his stature) to take thought is to eat with ulterior motives/desires/lusts...God made Adam in His image
James 1:13 Let no man say when he is tempted, I am tempted of God: for God cannot be tempted with evil, neither tempteth he any man:  14 But every man is tempted, when he is drawn away of his own lust, and enticed.  15 Then when lust hath conceived, it bringeth forth sin: and sin, when it is finished, bringeth forth death.
Proverbs 11:19 As righteousness tendeth to life: so he that pursueth evil pursueth it to his own death.
Just like the woman at the tree...taking thought...Jesus says "Take no thought for your life, what ye shall eat..."