In the current system scientists allocate reproduction efforts to results that they intend to build on. So if you’ve claimed a breakthrough technique for levitating widgets — and I think this widget technique can be used to build spacecraft (or if I think your technique is wrong) — then I will allocate precious time and resources to reproducing your work. By contrast if I don’t think your work is significant and worth following up on, then I allocate my efforts somewhere else. The advantage is that more apparently-significant results (“might cure cancer”) tend to get a bigger slice of very limited resources, while dead-end or useless results (“might slightly reduce flatulence in cats”) don’t. This distributed entrepreneurial approach isn’t perfect, but it works better than central planning. By contrast you could adopt a Soviet-like approach where cat farts and cancer both share replication resources, but this seems like it would be bad for everyone (except the cats.)