> Because you can make a convincing argument that you're worth 20% more. Except since everyone in the same position at the company will see you're making 20% m

> Because you can make a convincing argument that you're worth 20% more. Except since everyone in the same position at the company will see you're making 20% more the company will have to either pay all of existing employees in the same position 20% more or convince them their new hire is 20% better than all of them. It seems like the effect would be that either they can't offer you the 20% because they can't afford to give everyone a 20% raise OR several employees will leave because they feel slighted this new guy is getting paid more