^^Dajjal isn't far off and that's a very very serious matter, if it wasn't then why would every single prophet warn people about him Also Prophet PBUH said, his fitna will be the greatest fitna ever.
All these theories they (government etc) come up with nowadays, we believe but we should use our knownledge because if we don't and when dajjal comes, we will believe him like that too just like we believe these thories etc