We were unsure if wormholes could exist long enough to allow a person through. Now calculations indicate they are extremely rare, but could last the age of the universe
Source:
https://www.newscientist.com/article/2219039-quantum-weirdness-could-allow-a-person-sized-wormhole-to-last-forever/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home