4.19.3 Can you answer these questions?

4.19.3.1 Unexpected behavior of a variable

https://mathematica.stackexchange.com/questions/145661/unexpected-behavior-of-a-variable

 
I am confused with a strange phenomenon that I observe and do not understand. 
 
Look, here is a simple code making a random walk: 
 
Clear[list]; 
list = Accumulate[RandomInteger[{-1, 1}, {10, 2}]] 
 
(*  ...
 

- asked by Alexei Boulbitch 2votes

4.19.3.2 How can I disable system updates only?

https://mathematica.stackexchange.com/questions/146133/how-can-i-disable-system-updates-only

 
Suppose I'm quite happy with my current Mathematica installation and wish to keep the system in its current form just reliably working. 
 
Since there were already at least two cases[1,2] when a lot of  ...
 

- asked by Alexey Popkov 7votes

4.19.3.3 Import/export manipulate state in file

https://mathematica.stackexchange.com/questions/146017/import-export-manipulate-state-in-file

 
Is it possible to export the state of Manipulate with big number of parameters in file and then restore the parameters of Manipulate from this file?
 

- asked by   3votes

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