[Elecraft] K3: too easy to overwrite dial memories

[David Cutter]

Would your rule be covered if you had to hold in another button at the same 
time as hitting the memory button?  Or, say, turn the power to zero before 
making memory additions...

David
G3UNA


>   In the world of ergonomics and man-machine interface design, there is a 
> rule:  If an action will destroy information  or a state than cannot be 
> restored with the same effort that it took to destroy, then the system 
> requires either (a) a "Un-Do" function of equal simplicity, or (b) a 
> confirmation step.
>
>   The choice between (a) or (b) depends on the consequences of the 
> unintended action during the time it takes to recover.  For example, a 
> (hypothetical!) button that shuts down the jet engines on an aircraft 
> requires a confirmation step... because turning off the engines until the 
> pilot hits UnDo would be bad!
>
>   This rule applies to software as well as hardware.
>
> -- Eric K3NA