tobacco cropper Tractor mounted ride on harvester. One of the 1st advances in the field to help in harvest Tobacco harvester in field -

(The Stationery Office, 2020)

We cant expect to stumble up a ladder

So UPFs come into the marketplace somewhere in the mid-60s and the firms are operating at scale by the 1980s as the obesity rates in America start to tick up and they keep going up, up, up as ultra-processed foods continue to penetrate our food supply

What are the biggest challenges in getting people to convert

Retailers would be prohibited from selling products that contain flavor additives creating a characterizing flavor other than tobacco. Explicitly banned flavors include menthol, mint, wintergreen, clove, fruit, chocolate, vanilla, honey, candy or dessert flavors, alcoholic beverage flavors, and herbs or spices

And its not just tobacco: Drug use among US teens is down across the board