btw, we already have the technology to alter the comet's path do
it dun hit earth..
second, about the sun's expansion into a red giant, this is
inevitable.. nothing can change it.. it wil expand till it sallows
up earth or mars.. so no amount of chemical can stop that or create
a protective shield or anything.. its all useless when we are
toking about the sun.. it's too big for us to play with.. before it
even sallows up earth, most of the earth's water and atmosphere
will burn off.. so what make us think we will survive while nature
can even survive that disaster when we are also part of the natural
cycle?
for ur last point, do u know how much energy is needed to operate a
time machine?? you have to create a bend in the parallel universe!
it's like u r creating a worm hole! the amount of energy we need is
what the sun is capable of.. which is 100million tons of hydrogen
bombs blowing in 1sec.. how the hell r u going to get that much
energy?? and if u do create that, what r the consequence? destroy
half the planet? but if u successfully create the time machine and
went back, do u know how much things it will do? i mean as in bad
things.. how much lifes u will destroy? maybe if u accidently
changed something which affect u family line, u won't be born! btw,
i dun believe anyone can change the past.. this is because, u
invent the machine to change the past.. but when the past is
change, u won't get to have the urge to invent the time machine and
change anything.. so how r u going to change the past if u have no
time machine.. so this goes round and round.. the past is not
change..
it's not as simple as u think it is.. y not jus live as part of
nature's cycle.. human cilvalisation cannot last forever.. it's
only the matter of time.. and in this period of time, y not make
something gd out of it?
