I understand perfectly the concept of doors swinging into the home and doors swinging out from the home. It's the additions that have me flumoxed. As in "outside" swinging in and "inside" swinging out.
Jeesus Yorky...a simple Google might help you...
The majority of external doors will open inwards. This is particularly so in the case of front doors. You get home, you unlock the door, and you push. Whoever heard of a front door that needed to be pulled? But, however often we enter a house through an inward-opening door, we don’t often stop to think about
why it’s inward-opening. The prevalence of the design can be explained by three main factors.
Security
The primary function of an exterior door is that of securing the property against would-be intruders. Historically, outward-opening doors would need to have their hinges on the outside. This would provide criminals with the opportunity to sabotage the hinges and thereby remove the entire door. Nowadays, you can find outward-opening doors with their hinges protected – but they’re still more vulnerable than their inward-opening counterparts.
We should also consider that in the case of a front door, having it open inward will make it easier to shut the door on unwelcome doorstoppers, who, if the door opened outward, would be already standing within its arc if they were to move onto the doorstep. Inward-opening doors can also be more easily equipped with extra security features like latches and chains.
Weather
When an external door opens outwards, it’s exposed to the whims of mother nature. A stray gust of wind might slam a set of French patio doors so hard that the glazing shatters – or hard enough to cause anyone nearby to jump out of their skin. Wooden doors that open outward are also more exposed to rainwater than their inward-opening counterparts – particularly if the top of the door hasn’t been finished with the same attention as the front and back. After heavy snowfall, you might also find it impossible to open an outward-opening external door – which in some extreme cases might render the occupant housebound for days on end.
Safety
In some rare circumstances, inward-opening doors can be safer than outward opening ones. In the case of fire, it’s easier for rescuers to smash their way through an inward-opening door. Moreover, having the door open inward will preclude the possibility of opening the door into the face of the unsuspecting caller on the other side – a concern that’s particularly pressing if the door opens straight out onto the pavement.