Well those things don't matter for the example. You can come up with numerous answers to them. For instance:
- Smith knew Jones at school, and Jones was always getting better grades.
- Jones is the son of the boss.
- Jones has a more detailed CV, and has more experience.
As for the belief that Jones has 10 coins in his pocket, there are numerous answers to that.
- Jones told Smith he only had 10 coins, and Jones is a trustworthy guy.
- Jones emptied his pockets looking for something, and Smith counted the coins.
- Jones exchanged the only money he had (a £1 coin) for 10 10p coins that Smith had.
All the above beliefs are justified, and indeed, justifying the belief isn't the problem here. It's when a justified belief is true yet is not knowledge.
- Smith knew Jones at school, and Jones was always getting better grades.
- Jones is the son of the boss.
- Jones has a more detailed CV, and has more experience.
As for the belief that Jones has 10 coins in his pocket, there are numerous answers to that.
- Jones told Smith he only had 10 coins, and Jones is a trustworthy guy.
- Jones emptied his pockets looking for something, and Smith counted the coins.
- Jones exchanged the only money he had (a £1 coin) for 10 10p coins that Smith had.
All the above beliefs are justified, and indeed, justifying the belief isn't the problem here. It's when a justified belief is true yet is not knowledge.