or that we haven’t blasted ourselves back to the Stone Age…
Hydrogen power, Tesla technology & the like will provide cheap clean energy.
Greater research into electromagnetics will verify the existence the psychic realm, including some form of Afterlife, & may even enable enhancement of psychic abilities.
Necessities of life will be guaranteed everyone, but luxuries will require extra effort. (Necessities being food, clothing, basic education, temperature-controlled shelter, transport to work & needed errands, postal & phone communications.)
Every planet in the solar system will be explored via robots & when possible, manned missions. Lunar, Martian & Space Station colonies established. A robot probe will make it & transmit data from the nearest star systems (is it still the consensus that Alpha Centauri is the closest star to us?)
Samples of extinct animals will be restored via cloning
Embryonic cryogenics & transplanting will make abortion obsolete & it will be made mostly illegal.
All major religions will still exist but extremist violent elements will be so marginalized that it will be easy to put down any terrorist movements among them. Ethical Monotheism will prevail among all faiths & turn former hostilities among them into “friendly” rivalries.
An all-out war in the late 20th Century will either call Jews to abandon Israel & resettle in a special state in a Western nation OR more likely establish Israel as a permanent nation which all Arab & Muslim countries have to live with.
Neurosurgery & neurotropic medications will be used to restore dangerous/habitual criminals to society- probably as pacified forced laborers.
Society may allow pedophiles & bestialists to indulge via robotics & virtual reality. If not, such tendencies will also be forcibly eliminated by brain surgery & medication.
Polyamourous, homo- & bi-sexual relationships will be tolerated & will develop societal structures (a form of civil commitment). However, centuries of research will show the ideal environment for child-rearing to be two-parent (male & female) families within extended families.