Assume or presume what is the difference

[travellingwilbury]

I have often wondered (I know I need to get out more ) what the difference is between these two . Can anyone help please ?

[FAQ]

I don't know - but I try not to assume anything as it makes an ass out of you and me

[beansmum]

look here

[travellingwilbury]

Thank you

Clear as mud
Perfectly understood now

[beansmum]

I think you can use either, people will know what you mean. But 'presume' suggests that there is some evidence for your supposition, 'assume' does not.

[travellingwilbury]

Thank you that is clearer
I have had a look back and read it through again as well .