Probability Theory: Is A Certainty with C & T?

AI Thread Summary
The discussion centers on the probability of a specific event, denoted as "A," occurring under certain conditions (C) over an extensive time frame (T). It explores whether the probability can approach 1 when considering the vast number of possible combinations of elements and amino acids in microleters of water across the universe. The argument references Stephen Hawking's assertion about the likelihood of Earth being struck by a celestial object, suggesting that the potential for creating a primitive living cell is even greater due to the sheer number of combinations available. The poster seeks to understand how to prove this probability concept mathematically. The overarching question is about the feasibility of achieving a significant biological event given the immense time and conditions available.
dcroose
Messages
2
Reaction score
0

Homework Statement



A - something that is a known possibility
C - correct conditions conducive to produce A
T - many trillion years in which C continues


Homework Equations



Is it true that with the above factors the probability of "A" is "1", or very close to 1?

The Attempt at a Solution



This is what I believe Professor Steven Hawkins said about a meteor or comet striking Earth.


 
Physics news on Phys.org
It depends on how improbable the event is. If the probability of A occurring in a given year is 1 in a million, this does not mean that the probability of it occurring in a million years is 1. But in a trillion years, the probability of it not occurring is practically 0.

AM
 
Hi Andrew,
Thank you for the quick reply. I have tried to find an answer to my question on several math forums but you are the first one to respond.

The specific conditions of my case is the random mixing of all 92 elements and 26 amino acids In order to produce an exact sequence of the exact amount of elements and amino acids to produce a single primitive living cell capable of reproduction. A single cubic microleter of water in an ocean or lake or stream makes a perfect test tube for such random mixing of elements and amino acids. Moreover each microleter of water on the planet is continually changing its make up, thereby trying new mixtures. How many microleters of water do you think there are on planet Earth, and how many differnt combinations would be produced every hour? Now multiply that number of possible random combinations times the trillions of planets that exist in the universe and you have a very high number of randomly different combinations.

If Steven Hawkins can say the probabily of the Earth being hit bt an exterestial object is "one" over time. Then I feel my "number of randomly different combinations" is far higher than the number of extraterrestrial objects in the space of the solar syatem, and if anything, the occurance of the right combination of materials shoud be at least "one" given a time span of the trillions of years the universe will last.

Is there any way I can prove this?

I will look forward to a reply. You may email me if you like.

Take Care & thanks again.

The single most important criteria for all human decisions is ...
"Is it good for Earth's children?"

Dick Roose
http://realityfound.org
dcroose@comcast.net
 
Last edited by a moderator:
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...

Similar threads

Back
Top