Going down memory lane

What difference is there then between what I remember and what I imagine, and can I imagine what I cannot verify and still sincerely consider it as the truth?

You know it’s been awhile when the place that you once knew every nook and corner of now leaves you at the mercy of incorrectly spelt signboards for navigation. As the vehicle approaches the notorious black gate of what used to be my school compound, I roll down the window, hoping to catch a glimpse of the momo pasal that used to be on the opposite side of it. Perhaps my memory has failed me, I say to myself, because I see no trace of the shop that is etched so vividly in my heart.