*I just read the Proof that all odd numbers are prime node and it reminded me of the following, something I picked up from a lecturer at University:*
**1. The Mathematician**
"1 + 2 is 3 exactly."

**2. The Physicist** (

for it is He)

`i. ` "1 + 2 is somewhere between 2.5 and 3.5."

`ii.` "Real physicists only deal in orders of magnitude. 1 + 2 is thus 1+ 1 which equals 1, as close as you need to worry about." (thanks to

Albert Herring)

**3. The Engineer**
"1 + 2 is probably 3 but let's call it 10 to be on the safe side."

**4. The Accountant**
"1 + 2: how much do you want it to be?"