But when an online claim conflicts with an established historical event, the evidence behind each side matters.
In this case, one side consists of an unidentified or insufficiently identified man in a photograph who resembles a famous performer.
The other consists of the documented death of Michael Jackson in Los Angeles in 2009 and the official processes that followed.
Those are not equivalent forms of evidence.
The Los Angeles County Department of Medical Examiner explains that California law requires the department to inquire into and determine the circumstances, manner and cause of deaths falling within its jurisdiction, including sudden, violent and unusual deaths.
Its investigations can involve scene investigation, interviews, examinations, autopsies and laboratory testing when appropriate.
The department also maintains records connected with high-profile celebrity deaths.
This does not mean people cannot have fun with a celebrity resemblance.
It simply means a viral photograph should not be treated as proof of an extraordinary claim when far stronger evidence points in the opposite direction.
The distinction between entertainment and evidence is especially important online, where jokes can easily lose their original context.
Why Celebrity Look-Alikes Fascinate Us
The fascination with celebrity doubles existed long before social media.
For generations, people have made careers impersonating famous singers, actors and political figures. Some performers naturally resemble celebrities, while others use makeup, hairstyles, costumes and carefully practiced expressions to strengthen the effect.
Certain celebrities have attracted particularly large communities of impersonators.
Elvis Presley is perhaps one of the most famous examples. Marilyn Monroe, Charlie Chaplin and other cultural icons have also inspired generations of professional and amateur look-alikes.
Michael Jackson is no exception.
His distinctive fashion, hairstyles, dance movements and changing appearance over the course of his career gave impersonators numerous recognizable visual elements to reproduce.
But sometimes no deliberate impersonation is involved at all.
Two unrelated people can simply share certain facial characteristics.
When those similarities line up with the appearance of someone extremely famous, the effect can be startling.
Photography can make that resemblance appear even stronger.
Lighting changes the perceived shape of a face. Shadows can emphasize or conceal particular features. Camera lenses can subtly alter proportions. A photograph captured from one specific angle may make two people appear much more alike than they would if they were standing next to each other in person.
Hair, clothing and facial expression can complete the illusion.
That is why one photograph is rarely enough to establish someone's identity.
It may be enough, however, to make millions of people look twice.
The Brain Is Built to Recognize Faces
There is also a psychological reason celebrity look-alikes catch our attention so quickly.
Human beings are exceptionally sensitive to faces.
We routinely identify people from combinations of features rather than measuring every detail individually. Once a face becomes extremely familiar, relatively small visual cues can trigger recognition.
Think about how quickly you can recognize a close friend or family member from across a room.
You may not clearly see every feature, yet something about the person's outline, hair, movement or face tells you who you think you are seeing.
Celebrity recognition can work in a similar way.
Michael Jackson's image was reproduced around the world for decades. Even people who were not devoted fans may recognize him almost immediately.
That familiarity means a stranger who shares enough of his visual characteristics can trigger the same mental pattern.
Then context enters the picture.
If someone posts the photograph with a caption mentioning Michael Jackson, viewers are already primed to search for similarities.
They notice the matching features while potentially overlooking the differences.
The result can feel astonishing even when the explanation is simple.
Two people happen to look alike.
Why Social Media Makes These Images Explode
Before social media, an amusing celebrity look-alike photograph might have been shown to friends, relatives or coworkers.
Today, it can reach enormous audiences within hours.
The reason is simple: these images require almost no explanation.
A person sees the photograph.
They recognize the resemblance.
They react.
They share it.
The entire experience can happen in seconds.
Posts involving familiar celebrities also have a built-in advantage. Viewers already have an emotional connection to the subject.