Fixed #30573 -- Rephrased documentation to avoid words that minimise the involved difficulty.

This patch does not remove all occurrences of the words in question.
Rather, I went through all of the occurrences of the words listed
below, and judged if they a) suggested the reader had some kind of
knowledge/experience, and b) if they added anything of value (including
tone of voice, etc). I left most of the words alone. I looked at the
following words:

- simply/simple
- easy/easier/easiest
- obvious
- just
- merely
- straightforward
- ridiculous

Thanks to Carlton Gibson for guidance on how to approach this issue, and
to Tim Bell for providing the idea. But the enormous lion's share of
thanks go to Adam Johnson for his patient and helpful review.

docs/topics/class-based-views/mixins.txt

@@ -46,7 +46,7 @@ interface to working with templates in class-based views.
 
     ``render_to_response()`` itself calls
     :meth:`~django.views.generic.base.TemplateResponseMixin.get_template_names`,
-    which by default will just look up
+    which by default will look up
     :attr:`~django.views.generic.base.TemplateResponseMixin.template_name` on
     the class-based view; two other mixins
     (:class:`~django.views.generic.detail.SingleObjectTemplateResponseMixin`
@@ -61,8 +61,8 @@ interface to working with templates in class-based views.
     :meth:`~django.views.generic.base.ContextMixin.get_context_data()` passing
     any data they want to ensure is in there as keyword arguments.
     ``get_context_data()`` returns a dictionary; in ``ContextMixin`` it
-    simply returns its keyword arguments, but it is common to override this to
-    add more members to the dictionary. You can also use the
+    returns its keyword arguments, but it is common to override this to add
+    more members to the dictionary. You can also use the
     :attr:`~django.views.generic.base.ContextMixin.extra_context` attribute.
 
 Building up Django's generic class-based views
@@ -142,7 +142,7 @@ and
 :meth:`~django.views.generic.list.MultipleObjectMixin.paginate_queryset`. Unlike
 with :class:`~django.views.generic.detail.SingleObjectMixin`, there's no need
 to key off parts of the URL to figure out the queryset to work with, so the
-default just uses the
+default uses the
 :attr:`~django.views.generic.list.MultipleObjectMixin.queryset` or
 :attr:`~django.views.generic.list.MultipleObjectMixin.model` attribute
 on the view class. A common reason to override
@@ -212,11 +212,10 @@ the box.
 Using ``SingleObjectMixin`` with View
 -------------------------------------
 
-If we want to write a simple class-based view that responds only to
-``POST``, we'll subclass :class:`~django.views.generic.base.View` and
-write a ``post()`` method in the subclass. However if we want our
-processing to work on a particular object, identified from the URL,
-we'll want the functionality provided by
+If we want to write a class-based view that responds only to ``POST``, we'll
+subclass :class:`~django.views.generic.base.View` and write a ``post()`` method
+in the subclass. However if we want our processing to work on a particular
+object, identified from the URL, we'll want the functionality provided by
 :class:`~django.views.generic.detail.SingleObjectMixin`.
 
 We'll demonstrate this with the ``Author`` model we used in the
@@ -249,9 +248,8 @@ In practice you'd probably want to record the interest in a key-value
 store rather than in a relational database, so we've left that bit
 out. The only bit of the view that needs to worry about using
 :class:`~django.views.generic.detail.SingleObjectMixin` is where we want to
-look up the author we're interested in, which it just does with a simple call
-to ``self.get_object()``. Everything else is taken care of for us by the
-mixin.
+look up the author we're interested in, which it does with a call to
+``self.get_object()``. Everything else is taken care of for us by the mixin.
 
 We can hook this into our URLs easily enough:
 
@@ -288,8 +286,8 @@ object. In order to do this, we need to have two different querysets:
 
 ``Book`` queryset for use by :class:`~django.views.generic.list.ListView`
     Since we have access to the ``Publisher`` whose books we want to list, we
-    simply override ``get_queryset()`` and use the ``Publisher``’s
-    :ref:`reverse foreign key manager<backwards-related-objects>`.
+    override ``get_queryset()`` and use the ``Publisher``’s :ref:`reverse
+    foreign key manager<backwards-related-objects>`.
 
 ``Publisher`` queryset for use in :meth:`~django.views.generic.detail.SingleObjectMixin.get_object()`
     We'll rely on the default implementation of ``get_object()`` to fetch the
@@ -476,24 +474,23 @@ Our new ``AuthorDetail`` looks like this::
             # passed in form.cleaned_data['message']
             return super().form_valid(form)
 
-``get_success_url()`` is just providing somewhere to redirect to,
+``get_success_url()`` is provides somewhere to redirect to,
 which gets used in the default implementation of
 ``form_valid()``. We have to provide our own ``post()`` as noted earlier.
 
 A better solution
 -----------------
 
-It should be obvious that the number of subtle interactions between
+The number of subtle interactions between
 :class:`~django.views.generic.edit.FormMixin` and :class:`DetailView` is
 already testing our ability to manage things. It's unlikely you'd want to
 write this kind of class yourself.
 
-In this case, it would be fairly easy to just write the ``post()``
-method yourself, keeping :class:`DetailView` as the only generic
-functionality, although writing :class:`~django.forms.Form` handling code
-involves a lot of duplication.
+In this case, you could write the ``post()`` method yourself, keeping
+:class:`DetailView` as the only generic functionality, although writing
+:class:`~django.forms.Form` handling code involves a lot of duplication.
 
-Alternatively, it would still be easier than the above approach to
+Alternatively, it would still be less work than the above approach to
 have a separate view for processing the form, which could use
 :class:`~django.views.generic.edit.FormView` distinct from
 :class:`DetailView` without concerns.
@@ -529,11 +526,11 @@ write our own ``get_context_data()`` to make the
             context['form'] = AuthorInterestForm()
             return context
 
-Then the ``AuthorInterest`` is a simple :class:`FormView`, but we
-have to bring in :class:`~django.views.generic.detail.SingleObjectMixin` so we
-can find the author we're talking about, and we have to remember to set
-``template_name`` to ensure that form errors will render the same
-template as ``AuthorDisplay`` is using on ``GET``::
+Then the ``AuthorInterest`` is a :class:`FormView`, but we have to bring in
+:class:`~django.views.generic.detail.SingleObjectMixin` so we can find the
+author we're talking about, and we have to remember to set ``template_name`` to
+ensure that form errors will render the same template as ``AuthorDisplay`` is
+using on ``GET``::
 
     from django.http import HttpResponseForbidden
     from django.urls import reverse
@@ -593,7 +590,7 @@ rendered HTML.
 We can create a mixin class to use in all of our views, handling the
 conversion to JSON once.
 
-For example, a simple JSON mixin might look something like this::
+For example, a JSON mixin might look something like this::
 
     from django.http import JsonResponse
 
@@ -628,8 +625,8 @@ For example, a simple JSON mixin might look something like this::
 
 This mixin provides a ``render_to_json_response()`` method with the same signature
 as :func:`~django.views.generic.base.TemplateResponseMixin.render_to_response()`.
-To use it, we simply need to mix it into a ``TemplateView`` for example,
-and override ``render_to_response()`` to call ``render_to_json_response()`` instead::
+To use it, we need to mix it into a ``TemplateView`` for example, and override
+``render_to_response()`` to call ``render_to_json_response()`` instead::
 
     from django.views.generic import TemplateView
 
@@ -657,8 +654,8 @@ same behavior -- except for the format of the response.
 If you want to be really adventurous, you could even mix a
 :class:`~django.views.generic.detail.DetailView` subclass that is able
 to return *both* HTML and JSON content, depending on some property of
-the HTTP request, such as a query argument or a HTTP header. Just mix
-in both the ``JSONResponseMixin`` and a
+the HTTP request, such as a query argument or a HTTP header. Mix in both the
+``JSONResponseMixin`` and a
 :class:`~django.views.generic.detail.SingleObjectTemplateResponseMixin`,
 and override the implementation of
 :func:`~django.views.generic.base.TemplateResponseMixin.render_to_response()`