Marie has just finished her education and training as "General Engineer"
Her digging skill is 10
The next education she shall get is Miner.
She is suggested in the list because of her high digging skills.
But after she is accepted as "Apprentice Miner", she has immediately lost her digging skills - they are now 0 (zero)!
After taking the hat and a brief happy dance, she shows a sad face.
Perhaps she has realized that all of her skills are not worth a pence now.
Now the stats show "Marie's Digging skills: 2"
That's just too sad.
Give a good digger a chance to learn to become apprentice miner. Try with other professions and skills as well.