It seems you don’t get it either, so I’ll try to explain in terms that you might understand.
By investing in potential, we put the future of the club in jeopardy, because we need players for the here and now to help us remain in this division, or at least making a decent challenge to get back up next season. Teams like Chelsea and Man City can afford to invest in potential. Perhaps given a few seasons in the top flight, so could we. However, putting good money - and make no mistake, it was good money - into players for the future whilst ignoring the problems that we have in the present was utterly foolhardy, and the results and parlous situation we find ourselves in proves that. And if we go down, there’s a good chance that if our potential comes good, we’ll lose them to a bigger and better team anyway.
I’m not saying sign wastes of money like Wilshere, but we probably should have been a bit more short-term in our planning to achieve consolidation before plunging all our capital into players who just aren’t ready for this season. Obviously easy to say with hindsight, but you’d expect professional football managers to understand the issue and to have addressed it appropriately.