english: But that doesn't mean that all, or many, or most of today's attested languages couldn't descend perhaps from one that's much younger than that, like say 20,000 years, or something of that kind. It's what we call a bottleneck.
non_english: Toda to ne pomeni, da vsi ali veliko ali večina danes potrjenih jezikov ne bi mogla izvirati iz enega jezika, ki je veliko mlajši, na primer 20 000 let. Temu pravimo ozko grlo.