How I wish to live [2/2]

Trial and error. That was how everyone learned everything in this world. I could understand how IRIS would try to find out what caused the floor breaks. 

And since this information could be passed on, future generations would be better equipped. 

'Although that does not explain how civilization manages to reset every time the world ends. At least Noah's Ark had four pairs of men and women.'

"When IRIS and previous generations tested their theories, the floor breaks only became controllable when the Formless were excluded from the battle," Roland continued.

So this is why everything was deliberately made more difficult by the Formless. It was to delay the coming apocalypse at the cost of a few.

I understand killing a hundred to save a thousand, but if my loved ones were among the hundred, I would not stand by and watch.