Uit's more varied with
[0,0.5,0.9999999999999999,0.5,0.1,0,0.2,0.1]Uplaced "all at once"
Rwas just gonna post that lol
Udirt
Rbricks unaffected 
Ufire (basic)
Rdont try to grow a tree
Ucook (tool function temporarily removed)
Ubless
Uradiation goes up and quickly decays
Rplacing fire is relatively normal but fire from burning is single colored..
Rvery odd
Utrees aren't as drastic under this regime
Rmakes sense, the chances need more than 0.5 between 0 and 1 lol
Re.g. if Math.random() < 0.25
Somg wait
Syes do
Rdo what
Rwe're breaking the game..
Syes
Sgood
Rmelting dirt looks retro
Rum.. idk why carbon dioxide would move right
Syoo
Skeep this 
Ui enabed mods and death ray looks a bit weird
Uthe destruction is more left-biased
Rall gases trend rightward
SStop breaking the game 
Uthe worldgen is weird
Roh god electric is insane
Relectric turns a laggy filler alternative
Uyep
Sryan make this an alternate game mode
Romg wait radiation is really cool
Rfor some reason placing more radiation can affect all radiation on the screen
Uat normal size, the world looks differently weird
Rminecraft superflat
Ulol
SWhat are you even doing
Uwhat if i fuck up the preset's parameters...
Rplease try radiation its the weirdest thing
Ucomplexity to 4
Udisabling mods
Rradiation is affected if there are other pixels on the screen and idk how
Rtry empty world
Uwhat
randomValues are you using?Rthese ones
Uwow
Umaybe this effect could be useful for something if it was understood well enough to be invoked without clobbering core javascript features