These pictures were shot within 1 minute of the same episode, note the same shirt she wears but her 2 front teeth went from NONE to One LOL

Also Beatrice was born in 1960 and Dodie was born in 1963, they are hardly the same age but are portrayed as The SAME Age / Classmates - was Beatrice such a great actress that they could find a girl of similar age & size ?

It wasn't until I recently watched M3S that I noticed I could not stand looking at a little kid's mouth that was missing teeth. Buffy and Jody creep me out too when I look at their mouths.

FETV is currently on Season 4 of My Three Sons (so we're still in the black and white/ABC era with Mike and Bub) and I keep wondering when the infamous "MacMurray Method" in episodes was most obvious. I'm assuming that more than often, if we're watching a scene that doesn't have Fred MacMurray in it, then the chances are that they were filmed (https://www.quora.com/What-was-the-deal-with-Fred-MacMurrays-involvement-in-My-Three-Sons-Was-he-really-not-interested-in-the-show/answer/Jon-Mixon-1) at a later date.

FETV is currently on Season 4 of My Three Sons (so we're still in the black and white/ABC era with Mike and Bub) and I keep wondering when the infamous "MacMurray Method" in episodes was most obvious. I'm assuming that more than often, if we're watching a scene that doesn't have Fred MacMurray in it, then the chances are that they were filmed (https://www.quora.com/What-was-the-deal-with-Fred-MacMurrays-involvement-in-My-Three-Sons-Was-he-really-not-interested-in-the-show/answer/Jon-Mixon-1) at a later date.

Here are the earliest 2 episodes in which I've spotted an obvious inconsistency due to the MacMurray Method (long before Dodie (Dawn) arrived in Season 10):

Season 6, ep. 7 "Mary-Lou" -- In her scenes with Steve/Fred, Mary-Lou's hair is noticeably shorter (Patty Ann Gerrity).

Season 6, ep. 18 "Robbie and the Slave Girl" -- In her scenes with Steve/Fred, Terry Wong's hair is noticeably shorter (Irene Tsu).

EDIT: I've included images from the Mary-Lou episode.

Here we see Fred with lovely Patty. Note that her hair just grazes the
tops of her shoulders. The ends are pointing upward, not far from
her chin:
320724

With Stan Livingston, we see that Patty's hair is now going past
her shoulders. It has grown significantly since filming with Fred
earlier:
320725

And here is the "money-shot." Patty's beautifully styled
hair clearly has reached a longer length. Quite a distance
now from her chin to the hair ends:
320726

Patty lived a very short life, gone while in her forties. Very
beautiful young woman, it makes perfect sense that Chip
would have a massive crush on Mary-Lou...!

Also Beatrice was born in 1960 and Dodie was born in 1963, they are hardly the same age but are portrayed as The SAME Age / Classmates - was Beatrice such a great actress that they could find a girl of similar age & size ?

Also Stanley and Barry Livingston were cast members on the show; Barry (playing Ernie) was first portrayed as in the same school class as Stanley (playing Chip). In reality Stanley was three years older than Barry. Eventually the Ernie character became more important (he was adopted by the Douglases), and they realized they couldn't portray them as the same or nearly the same age, so they made it more realistic and placed Ernie as a younger age.

Here is lovely Irene Tsu as Terry Wong, Ray's cousin, in the other Season 6 ep I mentioned. This hair
continuity issue is more subtle than the one we looked at in the Mary-Lou episode.

We see that Irene's hair is relatively long, as the episode begins,
from later filming. Beautiful:
320765

We now see that later in the ep, a scene in which Fred MacMurray
also has a role, her hair is noticeably shorter. One can say in
continuity that she's had it cut, with her bangs trimmed. Note
that none of Irene's hair extends down her shoulder(s)
very far. This is actually when Irene is first filmed for M3S:
320766

But as we approach the end of the ep, as shots are recorded
without Fred actually appearing, suddenly the ends of Irene's
hair have been flipped up significantly to hide longer length
that has returned instantly. Note the long lock of hair by her
left shoulder.
320767

Her bangs are not noticeably longer than seen when Fred
appears, and there's no denying the flipped hairstyle does a
good job of disguising the fact that Irene's hair grew longer,
as does sweeping her bangs to the side:
320768

Very pretty lady!

These pictures were shot within 1 minute of the same episode, note the same shirt she wears but her 2 front teeth went from NONE to One LOL

Also Beatrice was born in 1960 and Dodie was born in 1963, they are hardly the same age but are portrayed as The SAME Age / Classmates - was Beatrice such a great actress that they could find a girl of similar age & size ?
Dodie has a much better outfit than Bea. How many channels can Bea get on that?