Worst ideas/features in programming languages?

[Araq]

On Saturday, 16 October 2021 at 00:16:07 UTC, IGotD- wrote:
> Is this penalty we can live with?

Probably but it's a hack, the proper solution is to fix the type 
system. And since this the topic already: Not distinguishing 
between traced and untraced pointers (or between owned and 
unowned pointers for that matter) is indeed one of the "worst" 
language features.