Valerie Jarrett, a former senior advisor to President Obama, talks with Recode's Kara Swisher at South by Southwest 2018. Jarrett is now on the boards of two tech companies, but when she first got to the White House, she didn't know what Twitter was — an important reminder of how quickly tech is changing everything. Jarrett says Obama made the best decisions he could while in office based on what he knew about Russia's election meddling, and explains what the Democrats need to do to regain their footing in 2018 and 2020. She also discusses her recently announced book deal, which is based on a question her daughter had asked her: What advice would she give to a 30-year-old version of herself today?