What I understand from the delayed choice double slit experiment, is that , only after we see in the detector of the whereabout of the particle, we get the patter according to it. That is if we have destroyed the detector and then we observe the screen we get an wave pattern. Barbecue we didn't have the access to the information of the particle whereabout. That is only after we decide whether to check the detector or not, we find the result on the screen according to our decision/action i.e before that there was no pattern on the screen. Which is why it is called delayed choice experiment. So what will be the pattern on the screen? when the detector record which slit the particle passed, but the detector is not looked at first instead the screen is observed first for the pattern and there is an sincere intention from our side to destroy the detector once the whatsoever pattern is observed on the screen without looking at the detector as we had honestly intended to destroy it and we did. What will be the pattern found? Because after observing the screen, anyhow we are destroying the detector/information completely i.e we will be not having any information of the particle which slit it passed. So according to it, we should get an wave pattern? Thanks.