[0.16.51] Research Tree not complete

[hardin]

Hello,

It is my first bug report for Factorio so i'm not sure how to do it properly.
And i'm not really sure that it can be considered as a bug but...

While i was playing, i researched the "Power Armor" research.
But, to craft the "Power Armor" item, you absolutely need the "Processing unit".
But the "Processing unit" is only available with the "Advanced Electronic 2" research .

So should not the "Advanced Electronic 2" research be required in order to search the "Power Armor" research ?
In my case, i had to do a little of manual search in each research to find which one give me the ability to craft the "processing unit" item (tedious, until i see the "Look for" field... But it is another story).

Well, i just propose that.
Regards,

[DaleStan]

The tech tree is going to be significantly redesigned for 0.17.

[Loewchen]

The tree does not care if you can produce it, it just shows if you can research it. You could have as many production options within one technology as you like, all with different requirements for production, there is no way to show this in the tree.
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