I see a window of opportunity 

That may be so, but is said window actually **open** for you to "acceptably" pass through it, or do you hafta BREAK THE GLASS to get in? Figurative speech, of course --- what it means, obviously, is that not every opportunity you may encounter was meant to be taken, ya know --- just because you CAN do something self-enriching doesn't mean that you SHOULD... for example, if someone has accidentally revealed a "privileged" tidbit of information, that is **not** implied or actual permission for you to utilize said info for your own benefit! Or maybe someone did indeed unknowingly leave something of value just lying around, but that doesn't give you the right to simply take it! Before you just "go grabbing" in cases like this, pause a moment to run the idea though your "Golden Rule analyzer" --- in other words, consider if this would really be fair to everyone involved, especially if you have no quarrel or resentment against said careless person, and therefore you would not be inclined to perform vengeful actions against him! And ask yourself what YOU would want done in an instance like this if YOU had been the one who had inadvertently exposed himself to possible loss or humiliation like this... would you want someone else to just gleefully avail himself of said "blood-opportunity", or would you strongly prefer an observer to just promptly inform you of your error so that you could hastily correct it???

Some repairmen had unwittingly neglected to observe a loose door-latch on a side-entrance to a public-assembly building that I had always enjoyed visiting, and so my initial knee-jerk reaction was to think, "I see a window of opportunity!" in that this unsecured door meant that I could secretly access said meeting-house whenever I wished, even when it was locked up. But then I remembered how kind and generous and accommodating the officials of said establishment had always been to me, and so I forlornly forfeited said "wonderful option" and "did the right thing" instead --- I immediately speed-waked downtown and informed one of the community's seniors about the defective lock. He was extremely grateful to me, warmly praised me for my conscientiousness, and even graciously gave me one-time permission to utilize said unsecured door to slip back inside the now-closed building and finish making a movie ("You may even turn some lights back on to brighten up the room enough for your camera!") of the hall's delightful interior furnishings, even though it was technically "after hours" and so nobody else was there.

I see a window of opportunity by QuacksO September 12, 2019