Our Senior Developers Aren’t Writing Code Anymore:"The first step is to find out why your top-tier team isn't writing
code anymore, so you drop in to talk. That's when you discover that the
recent round of hiring you did had an unintended side-effect. All the
new team members are spending their days asking your top talent to help
them. So instead of writing code, your best team is spending their days
doing ad-hoc, time-intensive, inefficient one-on-one mentoring.
As the team's manager, you're faced with a dilemma. The new team
members need to learn, but the existing team needs to get work done.
Both are important, but the team isn't striking a balance on their own.
There are several practices you can introduce to help find a middle ground."
None of which are pair programming, which is an oversight. But I agree that Alone Time works.