Problem: Add spaces: YoungcertainlywasapoormathematicianandPitcairne'schallengewaswellfounded.

Spaces added: Young certainly was a poor mathematician and Pitcairne's challenge was well founded.

Problem: Add spaces: Asapoweruserandadesignenthusiast,Ireallylikethisfeature.

Spaces added: As a power user and a design enthusiast, I really like this feature.

Problem: Add spaces: Totheonewhohadgainedfivepounds,hesaid,“Bethoualsooverfivecities.”

Spaces added: To the one who had gained five pounds, he said, “Be thou also over five cities.”

Problem: Add spaces: At8Jörgenteredinordertoinformusthatitwastimeforabreak.

Spaces added:
At 8 Jörg entered in order to inform us that it was time for a break.