
Probability and Statistics Basic Probability and Statistics Math Forum 
 LinkBack  Thread Tools  Display Modes 
June 25th, 2018, 01:01 PM  #1 
Senior Member Joined: Jun 2018 From: UK Posts: 103 Thanks: 1  The probability of this being another probability question
Is 100%. Can someone tell me if below is a new idea? In a closed system, at time t+1 the set of all possible future events is smaller or equal to the set of all possible future events at time t. Because:  Things that are possible can become impossible  Things that are impossible can’t become possible  So the probability space shrinks with time A good example of this is the 2nd law of thermodynamics; heat death of systems etc... 
June 25th, 2018, 01:15 PM  #2 
Senior Member Joined: Oct 2009 Posts: 608 Thanks: 186 
Sure, makes sense. Not very deep idea though...

June 25th, 2018, 02:01 PM  #3 
Senior Member Joined: Jun 2018 From: UK Posts: 103 Thanks: 1 
Sure but it’s widely applicable especially in connection with infinity and the old saying ‘anything that can happen will happen’. Rules out Boltzmann Brains for example https://en.m.wikipedia.org/wiki/Boltzmann_brain 
June 25th, 2018, 02:01 PM  #4 
Senior Member Joined: Jun 2018 From: UK Posts: 103 Thanks: 1 
Sure but it’s widely applicable especially in connection with infinity and the old saying ‘anything that can happen will happen’. Rules out Boltzmann Brains for example https://en.m.wikipedia.org/wiki/Boltzmann_brain 
June 25th, 2018, 02:06 PM  #5 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,451 Thanks: 946  

Tags 
probability, question 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Could someone help me with this probability question?  naryb  Probability and Statistics  2  June 14th, 2016 12:00 PM 
Continuous probability; find probability density function  rivaaa  Advanced Statistics  5  November 5th, 2015 02:51 PM 
Joint probability density function, probability  token22  Advanced Statistics  2  April 26th, 2012 04:28 PM 
Probability Question 4  duke  Advanced Statistics  3  November 13th, 2007 09:59 AM 
Probability Question 3  duke  Advanced Statistics  2  November 4th, 2007 09:20 AM 