On Saturday, 22 October 2016 00:11:52 UTC+1, Rod Speed wrote:
"James Wilkinson Sword" wrote in message

I use about 20 programs, and about 5 in one day. Stupid to leave all 20
open.

Not when you have enough physical memory so the system doesnt swap.

Only a fool like you closes them so it has to wait for them
to open again, particularly with the slowest opening apps.

I disagree. It is very sensible to shut down programs that are
not being actively used. Most notebook and desktop computers do
not have ECC memory, so occasionally there will be single-bit
errors from cosmic rays or alpha particles emitted by
contamination in the encapsulation of the memory chips. These
errors will accumulate over time and may eventually cause the
programs to misbehave in ways that are not necessarily easy to
detect.

See: "DRAM Errors in the Wild: A Large-Scale Field Study"

research.google.com/pubs/archive/35162.pdf

John