category – skillist, gzThreat
I blogged about several slow-changing professions — medical, civil engineers, network engineers, teachers, quants, academic researchers, accountants (including financial controllers in banks).
My overall impression is, with notable exceptions, many of the slow-changing domains don’t pay so well. We will restrict ourselves to white-collar, knowledge intensive professions.
https://bintanvictor.wordpress.com/2014/11/03/technology-churn-ccjava-letter-to-many/ is my comparison of java, c#, c++. Basically I’m after the rare combination of
– sustained, robust demand over 15 to 30 years
– low churn
Someone mentioned entry barrier. Valuable feature, but I think it is neither necessary nor sufficient a condition.
SQL and shell scripting are good examples. Very low churn; robust demand, mainstream. Salary isn’t highest, but decent.