Risks of maxing out memory

Projects Programming
1

Hi, I am aware if the risks of maxing out Dynamic memory and overwriting stuff, so I always try to keep that below 70%, but are there any risks in using almost all program space?

Sketch uses 31,062 bytes (96%) of program storage space. Maximum is 32,256 bytes.
Global variables use 1,412 bytes (68%) of dynamic memory, leaving 636 bytes for local variables.

2

No, since flash memory is fixed, you can use it up to 100%.

3

KeithRB:
No, since flash memory is fixed, you can use it up to 100%.

Great, thanks.