This picture is so obnoxiously detailed that I have to make it un-aesthetically pleasing and enlarge it EXCESSIVELY. What were you thinking, Bosch-man?
On the left you have Adam and Eve in Eden in the presence of God.
On the right you have hell in all its horror and torture.
And in the middle you have one big orgy.
Whether Bosch was trying to portray this as a scene of immense, unimaginable pleasure or a warning against excess we don't know. Either way, the artist puts his viewers in the position of peeping toms, making people from his era and ours probably feel a little uncomfortable and a little curious as to what was happening.
I feel as though this is an "irrational" image because I don't believe that the middle ground between paradise and hell is excessive copulation. Personal opinion though. Others are free to disagree.
CARMEN (A True Madrilena--the best student you have in your Modern Art Class) THINKS:
"It portrays the twisted views that the Medieval people had of paradise and hell....(she'll continue in Spanish)...este triptico muestra la vision dualista el mundo, que los artistas medievales tenian del cielo y el infierno,siendo este ultimo, un lugar actualmente fisico, en el que los hobres seran castigados por sus pecados de gula, pasion y fornicacion.