When a person has a complete memory loss due to some accident, then what kind of memory is lost ?
Can he speak languages (other then mother tongue) which he knew before the memory loss?
Can he use different appliences (such as computers, electronic devices etc.) which he knew before memory loss?
it depends on the type of memory loss
anterograde or retrograde amnesia.
if its anterograde...then his/her short term memory is shot and he/she has a difficult time learning how to do new things, but retains memory of old things.
in retrograde...person loses memories, and the learned things are usually not lost, unless that specific area of the brain is affected that helps us learn how to do specific things.
i hope this helps!