The talent whisperer for Citadel, Blackstone, other firms breaks down the 4 biggest hiring mistakes and how to avoid them

• Top firms pay ghSmart, a talent advisory company, millions a year for its advice.
• Its founder, Geoff Smart, broke down the biggest hiring missteps he sees and how to avoid them.
• His tips include avoiding hypothetical questions and spending 20% of calendar time on talent.

Most managers suck at hiring.