Retired from his work for 10 years due a health-addict condition. Knows all about construction and constructors due to his experience of more than 30 years. Went to rehab and quit drinking. Cannot read or write and is part of an old generation of people that due to social limitations and personal choices never had the change and will never feel the need to study.
I've Proposed him a challenge to went and learn how to read and write so he can surprise himself and the family.