Lin Yuan continued updating his observation log.
The twelfth day of the experiment.
Nang Nang's compatibility with evolving into [Pocket-Space Bird] had reached 82%.
The rate of increase wasn't slow.
Once it reached Ordinary Level 10 and its compatibility rose above 90%, it could attempt to evolve.
The compatibility of the other young pets was also steadily increasing.
The [Maintain the Status Quo] control group still showed 0% across the board.
One interesting change was that a few days ago, he had intervened slightly, having the older Tailwind from the [Free Choice Group] take part in one of their arranged deliveries to a "perfect customer."
Having gotten a taste of the benefits, Tailwind began secretly choosing to deliver to this customer of his own accord, with a sense of "criminal" intent.
Once on the first day, twice on the second, and three times on the third.
Now his compatibility wasn't 0% anymore, either. It had risen to 4%.
It wasn't much, but this tiny bit of human intervention had created a tendency in his choices.
This also made Lin Yuan realize that even after years of discipline, even if experienced [Courier Birds] believed they shouldn't form emotional connections with customers, they would still, at their core, gravitate toward "happiness" and "joy."
They weren't "cold and heartless" "delivery machines."
After thinking it over, he checked off his second hypothesis as well.
He also made a note: even the simplest human intervention would change the behavioral tendencies of older [Courier Birds].
Then he added a note beside it: more samples needed for verification.
On the path of the leader in his third hypothesis, he added another label: feedback on the results achieved by [Courier Bird] fledglings might be the next turning point.
As for whether there were more hidden paths in his