I'm reading some note of Eric Sims on extensions to RBCs and he writes «In any balanced growth path, feasibility requires that hours do not grow». The author then explains that this is so, because if it decreased than working hours would eventually decrease to zero, and if they were increasing, then they would reach the max which is 1.
Honestly, I don't get what he means by feasibility here. Is it a mathematical term, or should I read it as plain english?
Any help would be appreciated