Pictures Philadelphia Magazine's ThinkFest 2019 November 14, 2019 / 6:34 PM EST / CBS News (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 3 (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 4 (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 5 (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 6 (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 7 (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 8 (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 9 (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 10 (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 11 (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 12 (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 13 (Credit: HughE Dillon) Philadelphia magazine's ThinkFest 2019 1 (Credit: HughE Dillon)