Modern technology is BOON OR BANE. Boon is useful and BANEFUL is Something happened misery or death
baneful = B(bad) + painful; anything which is bad and painful ultimatly ruins us and leads to death
INVERT b...it will become paneful(painful)...hence evil,poisonous.....
BANE from batman movie , was harmful and sinister and deadly
BANEFUL=>PAINFUL means HARMFUL. simple!